/* Language-independent diagnostic subroutines for the GNU C compiler Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. Contributed by Gabriel Dos Reis This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* This file implements the language independent aspect of diagnostic message module. */ #include "config.h" #undef FLOAT /* This is for hpux. They should change hpux. */ #undef FFS /* Some systems define this in param.h. */ #include "system.h" #include "tree.h" #include "tm_p.h" #include "flags.h" #include "input.h" #include "toplev.h" #include "intl.h" #include "diagnostic.h" #define obstack_chunk_alloc xmalloc #define obstack_chunk_free free #define output_formatted_integer(BUFFER, FORMAT, INTEGER) \ do { \ sprintf ((BUFFER)->digit_buffer, FORMAT, INTEGER); \ output_add_string (BUFFER, (BUFFER)->digit_buffer); \ } while (0) #define output_text_length(BUFFER) (BUFFER)->line_length #define is_starting_newline(BUFFER) (output_text_length (BUFFER) == 0) #define output_prefix(BUFFER) (BUFFER)->state.prefix #define line_wrap_cutoff(BUFFER) (BUFFER)->state.maximum_length #define prefix_was_emitted_for(BUFFER) (BUFFER)->state.emitted_prefix_p #define output_buffer_ptr_to_format_args(BUFFER) (BUFFER)->state.format_args #define diagnostic_args output_buffer_ptr_to_format_args (diagnostic_buffer) #define diagnostic_msg output_buffer_text_cursor (diagnostic_buffer) /* Prototypes. */ static void diagnostic_finish PARAMS ((output_buffer *)); static void output_do_verbatim PARAMS ((output_buffer *, const char *, va_list *)); static void output_buffer_to_stream PARAMS ((output_buffer *)); static void output_format PARAMS ((output_buffer *)); static void output_indent PARAMS ((output_buffer *)); static char *vbuild_message_string PARAMS ((const char *, va_list)) ATTRIBUTE_PRINTF (1, 0); static char *build_message_string PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1; static void output_do_printf PARAMS ((output_buffer *, const char *)) ATTRIBUTE_PRINTF (2, 0); static void format_with_decl PARAMS ((output_buffer *, tree)); static void diagnostic_for_decl PARAMS ((tree, const char *, va_list *, int)); static void set_real_maximum_length PARAMS ((output_buffer *)); static void output_unsigned_decimal PARAMS ((output_buffer *, unsigned int)); static void output_long_decimal PARAMS ((output_buffer *, long int)); static void output_long_unsigned_decimal PARAMS ((output_buffer *, long unsigned int)); static void output_octal PARAMS ((output_buffer *, unsigned int)); static void output_long_octal PARAMS ((output_buffer *, unsigned long int)); static void output_hexadecimal PARAMS ((output_buffer *, unsigned int)); static void output_long_hexadecimal PARAMS ((output_buffer *, unsigned long int)); static void output_append_r PARAMS ((output_buffer *, const char *, int)); static void wrap_text PARAMS ((output_buffer *, const char *, const char *)); static void maybe_wrap_text PARAMS ((output_buffer *, const char *, const char *)); static void clear_diagnostic_info PARAMS ((output_buffer *)); static void default_diagnostic_starter PARAMS ((output_buffer *, diagnostic_context *)); static void default_diagnostic_finalizer PARAMS ((output_buffer *, diagnostic_context *)); static void error_recursion PARAMS ((void)) ATTRIBUTE_NORETURN; extern int rtl_dump_and_exit; extern int warnings_are_errors; /* A diagnostic_context surrogate for stderr. */ static diagnostic_context global_diagnostic_context; diagnostic_context *global_dc = &global_diagnostic_context; /* This will be removed shortly. */ output_buffer *diagnostic_buffer = &global_diagnostic_context.buffer; /* Function of last error message; more generally, function such that if next error message is in it then we don't have to mention the function name. */ static tree last_error_function = NULL; /* Used to detect when input_file_stack has changed since last described. */ static int last_error_tick; /* Called by report_error_function to print out function name. Default may be overridden by language front-ends. */ void (*print_error_function) PARAMS ((diagnostic_context *, const char *)) = default_print_error_function; /* Prevent recursion into the error handler. */ static int diagnostic_lock; /* Return truthvalue if current input file is different from the most recent file involved in a diagnostic message. */ int error_module_changed () { return last_error_tick != input_file_stack_tick; } /* Remember current file as being the most recent file involved in a diagnostic message. */ void record_last_error_module () { last_error_tick = input_file_stack_tick; } /* Same as error_module_changed, but for function. */ int error_function_changed () { return last_error_function != current_function_decl; } /* Same as record_last_error_module, but for function. */ void record_last_error_function () { last_error_function = current_function_decl; } /* Initialize the diagnostic message outputting machinery. */ void diagnostic_initialize (context) diagnostic_context *context; { memset (context, 0, sizeof *context); obstack_init (&context->buffer.obstack); /* By default, diagnostics are sent to stderr. */ output_buffer_attached_stream (&context->buffer) = stderr; /* By default, we emit prefixes once per message. */ diagnostic_prefixing_rule (context) = DIAGNOSTICS_SHOW_PREFIX_ONCE; diagnostic_starter (context) = default_diagnostic_starter; diagnostic_finalizer (context) = default_diagnostic_finalizer; } /* Returns true if BUFFER is in line-wrapping mode. */ int output_is_line_wrapping (buffer) output_buffer *buffer; { return diagnostic_line_cutoff (buffer) > 0; } /* Return BUFFER's prefix. */ const char * output_get_prefix (buffer) const output_buffer *buffer; { return output_prefix (buffer); } /* Subroutine of output_set_maximum_length. Set up BUFFER's internal maximum characters per line. */ static void set_real_maximum_length (buffer) output_buffer *buffer; { /* If we're told not to wrap lines then do the obvious thing. In case we'll emit prefix only once per diagnostic message, it is appropriate not to increase unnecessarily the line-length cut-off. */ if (! output_is_line_wrapping (buffer) || diagnostic_prefixing_rule (buffer) == DIAGNOSTICS_SHOW_PREFIX_ONCE || diagnostic_prefixing_rule (buffer) == DIAGNOSTICS_SHOW_PREFIX_NEVER) line_wrap_cutoff (buffer) = diagnostic_line_cutoff (buffer); else { int prefix_length = output_prefix (buffer) ? strlen (output_prefix (buffer)) : 0; /* If the prefix is ridiculously too long, output at least 32 characters. */ if (diagnostic_line_cutoff (buffer) - prefix_length < 32) line_wrap_cutoff (buffer) = diagnostic_line_cutoff (buffer) + 32; else line_wrap_cutoff (buffer) = diagnostic_line_cutoff (buffer); } } /* Sets the number of maximum characters per line BUFFER can output in line-wrapping mode. A LENGTH value 0 suppresses line-wrapping. */ void output_set_maximum_length (buffer, length) output_buffer *buffer; int length; { diagnostic_line_cutoff (buffer) = length; set_real_maximum_length (buffer); } /* Sets BUFFER's PREFIX. */ void output_set_prefix (buffer, prefix) output_buffer *buffer; const char *prefix; { output_prefix (buffer) = prefix; set_real_maximum_length (buffer); prefix_was_emitted_for (buffer) = 0; output_indentation (buffer) = 0; } /* Return a pointer to the last character emitted in the output BUFFER area. A NULL pointer means no character available. */ const char * output_last_position (buffer) const output_buffer *buffer; { const char *p = NULL; if (obstack_base (&buffer->obstack) != obstack_next_free (&buffer->obstack)) p = ((const char *) obstack_next_free (&buffer->obstack)) - 1; return p; } /* Free BUFFER's prefix, a previously malloc'd string. */ void output_destroy_prefix (buffer) output_buffer *buffer; { if (output_prefix (buffer) != NULL) { free ((char *) output_prefix (buffer)); output_prefix (buffer) = NULL; } } /* Zero out any text output so far in BUFFER. */ void output_clear_message_text (buffer) output_buffer *buffer; { obstack_free (&buffer->obstack, obstack_base (&buffer->obstack)); output_text_length (buffer) = 0; } /* Zero out any diagnostic data used so far by BUFFER. */ static void clear_diagnostic_info (buffer) output_buffer *buffer; { output_buffer_text_cursor (buffer) = NULL; output_buffer_ptr_to_format_args (buffer) = NULL; prefix_was_emitted_for (buffer) = 0; output_indentation (buffer) = 0; } /* Construct an output BUFFER with PREFIX and of MAXIMUM_LENGTH characters per line. */ void init_output_buffer (buffer, prefix, maximum_length) output_buffer *buffer; const char *prefix; int maximum_length; { memset (buffer, 0, sizeof (output_buffer)); obstack_init (&buffer->obstack); output_buffer_attached_stream (buffer) = stderr; diagnostic_line_cutoff (buffer) = maximum_length; diagnostic_prefixing_rule (buffer) = diagnostic_prefixing_rule (global_dc); output_set_prefix (buffer, prefix); output_text_length (buffer) = 0; clear_diagnostic_info (buffer); } /* Reinitialize BUFFER. */ void output_clear (buffer) output_buffer *buffer; { output_clear_message_text (buffer); clear_diagnostic_info (buffer); } /* Finishes constructing a NULL-terminated character string representing the BUFFERed message. */ const char * output_finalize_message (buffer) output_buffer *buffer; { obstack_1grow (&buffer->obstack, '\0'); return output_message_text (buffer); } void flush_diagnostic_buffer () { output_buffer_to_stream (diagnostic_buffer); fflush (output_buffer_attached_stream (diagnostic_buffer)); } /* Return the amount of characters BUFFER can accept to make a full line. */ int output_space_left (buffer) const output_buffer *buffer; { return line_wrap_cutoff (buffer) - output_text_length (buffer); } /* Write out BUFFER's prefix. */ void output_emit_prefix (buffer) output_buffer *buffer; { if (output_prefix (buffer) != NULL) { switch (diagnostic_prefixing_rule (buffer)) { default: case DIAGNOSTICS_SHOW_PREFIX_NEVER: break; case DIAGNOSTICS_SHOW_PREFIX_ONCE: if (prefix_was_emitted_for (buffer)) { output_indent (buffer); break; } output_indentation (buffer) += 3; /* Fall through. */ case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: { int prefix_length = strlen (output_prefix (buffer)); output_append_r (buffer, output_prefix (buffer), prefix_length); prefix_was_emitted_for (buffer) = 1; } break; } } } /* Have BUFFER start a new line. */ void output_add_newline (buffer) output_buffer *buffer; { obstack_1grow (&buffer->obstack, '\n'); output_text_length (buffer) = 0; } /* Appends a character to BUFFER. */ void output_add_character (buffer, c) output_buffer *buffer; int c; { if (output_is_line_wrapping (buffer) && output_space_left (buffer) <= 0) output_add_newline (buffer); obstack_1grow (&buffer->obstack, c); ++output_text_length (buffer); } /* Adds a space to BUFFER. */ void output_add_space (buffer) output_buffer *buffer; { if (output_is_line_wrapping (buffer) && output_space_left (buffer) <= 0) { output_add_newline (buffer); return; } obstack_1grow (&buffer->obstack, ' '); ++output_text_length (buffer); } /* These functions format an INTEGER into BUFFER as suggested by their names. */ void output_decimal (buffer, i) output_buffer *buffer; int i; { output_formatted_integer (buffer, "%d", i); } static void output_long_decimal (buffer, i) output_buffer *buffer; long int i; { output_formatted_integer (buffer, "%ld", i); } static void output_unsigned_decimal (buffer, i) output_buffer *buffer; unsigned int i; { output_formatted_integer (buffer, "%u", i); } static void output_long_unsigned_decimal (buffer, i) output_buffer *buffer; long unsigned int i; { output_formatted_integer (buffer, "%lu", i); } static void output_octal (buffer, i) output_buffer *buffer; unsigned int i; { output_formatted_integer (buffer, "%o", i); } static void output_long_octal (buffer, i) output_buffer *buffer; unsigned long int i; { output_formatted_integer (buffer, "%lo", i); } static void output_hexadecimal (buffer, i) output_buffer *buffer; unsigned int i; { output_formatted_integer (buffer, "%x", i); } static void output_long_hexadecimal (buffer, i) output_buffer *buffer; unsigned long int i; { output_formatted_integer (buffer, "%lx", i); } /* Append to BUFFER a string specified by its STARTING character and LENGTH. */ static void output_append_r (buffer, start, length) output_buffer *buffer; const char *start; int length; { obstack_grow (&buffer->obstack, start, length); output_text_length (buffer) += length; } /* Append a string deliminated by START and END to BUFFER. No wrapping is done. However, if beginning a new line then emit output_prefix (BUFFER) and skip any leading whitespace if appropriate. The caller must ensure that it is safe to do so. */ void output_append (buffer, start, end) output_buffer *buffer; const char *start; const char *end; { /* Emit prefix and skip whitespace if we're starting a new line. */ if (is_starting_newline (buffer)) { output_emit_prefix (buffer); if (output_is_line_wrapping (buffer)) while (start != end && *start == ' ') ++start; } output_append_r (buffer, start, end - start); } static void output_indent (buffer) output_buffer *buffer; { int n = output_indentation (buffer); int i; for (i = 0; i < n; ++i) output_add_character (buffer, ' '); } /* Wrap a text delimited by START and END into BUFFER. */ static void wrap_text (buffer, start, end) output_buffer *buffer; const char *start; const char *end; { int is_wrapping = output_is_line_wrapping (buffer); while (start != end) { /* Dump anything bordered by whitespaces. */ { const char *p = start; while (p != end && *p != ' ' && *p != '\n') ++p; if (is_wrapping && p - start >= output_space_left (buffer)) output_add_newline (buffer); output_append (buffer, start, p); start = p; } if (start != end && *start == ' ') { output_add_space (buffer); ++start; } if (start != end && *start == '\n') { output_add_newline (buffer); ++start; } } } /* Same as wrap_text but wrap text only when in line-wrapping mode. */ static void maybe_wrap_text (buffer, start, end) output_buffer *buffer; const char *start; const char *end; { if (output_is_line_wrapping (buffer)) wrap_text (buffer, start, end); else output_append (buffer, start, end); } /* Append a STRING to BUFFER; the STRING might be line-wrapped if in appropriate mode. */ void output_add_string (buffer, str) output_buffer *buffer; const char *str; { maybe_wrap_text (buffer, str, str + (str ? strlen (str) : 0)); } /* Flush the content of BUFFER onto the attached stream, and reinitialize. */ static void output_buffer_to_stream (buffer) output_buffer *buffer; { const char *text = output_finalize_message (buffer); fputs (text, output_buffer_attached_stream (buffer)); output_clear_message_text (buffer); } /* Format a message pointed to by output_buffer_text_cursor (BUFFER) using output_buffer_format_args (BUFFER) as appropriate. The following format specifiers are recognized as being language independent: %d, %i: (signed) integer in base ten. %u: unsigned integer in base ten. %o: unsigned integer in base eight. %x: unsigned integer in base sixteen. %ld, %li, %lo, %lu, %lx: long versions of the above. %c: character. %s: string. %%: `%'. %*.s: a substring the length of which is specified by an integer. */ static void output_format (buffer) output_buffer *buffer; { for (; *output_buffer_text_cursor (buffer); ++output_buffer_text_cursor (buffer)) { int long_integer = 0; /* Ignore text. */ { const char *p = output_buffer_text_cursor (buffer); while (*p && *p != '%') ++p; wrap_text (buffer, output_buffer_text_cursor (buffer), p); output_buffer_text_cursor (buffer) = p; } if (!*output_buffer_text_cursor (buffer)) break; /* We got a '%'. Let's see what happens. Record whether we're parsing a long integer format specifier. */ if (*++output_buffer_text_cursor (buffer) == 'l') { long_integer = 1; ++output_buffer_text_cursor (buffer); } /* Handle %c, %d, %i, %ld, %li, %lo, %lu, %lx, %o, %s, %u, %x, %.*s; %%. And nothing else. Front-ends should install printers to grok language specific format specifiers. */ switch (*output_buffer_text_cursor (buffer)) { case 'c': output_add_character (buffer, va_arg (output_buffer_format_args (buffer), int)); break; case 'd': case 'i': if (long_integer) output_long_decimal (buffer, va_arg (output_buffer_format_args (buffer), long int)); else output_decimal (buffer, va_arg (output_buffer_format_args (buffer), int)); break; case 'o': if (long_integer) output_long_octal (buffer, va_arg (output_buffer_format_args (buffer), unsigned long int)); else output_octal (buffer, va_arg (output_buffer_format_args (buffer), unsigned int)); break; case 's': output_add_string (buffer, va_arg (output_buffer_format_args (buffer), const char *)); break; case 'u': if (long_integer) output_long_unsigned_decimal (buffer, va_arg (output_buffer_format_args (buffer), long unsigned int)); else output_unsigned_decimal (buffer, va_arg (output_buffer_format_args (buffer), unsigned int)); break; case 'x': if (long_integer) output_long_hexadecimal (buffer, va_arg (output_buffer_format_args (buffer), unsigned long int)); else output_hexadecimal (buffer, va_arg (output_buffer_format_args (buffer), unsigned int)); break; case '%': output_add_character (buffer, '%'); break; case '.': { int n; const char *s; /* We handle no precision specifier but `%.*s'. */ if (*++output_buffer_text_cursor (buffer) != '*') abort (); else if (*++output_buffer_text_cursor (buffer) != 's') abort (); n = va_arg (output_buffer_format_args (buffer), int); s = va_arg (output_buffer_format_args (buffer), const char *); output_append (buffer, s, s + n); } break; default: if (!buffer->format_decoder || !(*buffer->format_decoder) (buffer)) { /* Hmmm. The front-end failed to install a format translator but called us with an unrecognized format. Sorry. */ abort (); } } } } static char * vbuild_message_string (msg, ap) const char *msg; va_list ap; { char *str; vasprintf (&str, msg, ap); return str; } /* Return a malloc'd string containing MSG formatted a la printf. The caller is responsible for freeing the memory. */ static char * build_message_string VPARAMS ((const char *msg, ...)) { char *str; VA_OPEN (ap, msg); VA_FIXEDARG (ap, const char *, msg); str = vbuild_message_string (msg, ap); VA_CLOSE (ap); return str; } /* Return a malloc'd string describing a location. The caller is responsible for freeing the memory. */ char * context_as_prefix (file, line, warn) const char *file; int line; int warn; { if (file) { if (warn) return build_message_string (_("%s:%d: warning: "), file, line); else return build_message_string ("%s:%d: ", file, line); } else { if (warn) return build_message_string (_("%s: warning: "), progname); else return build_message_string ("%s: ", progname); } } /* Same as context_as_prefix, but only the source FILE is given. */ char * file_name_as_prefix (f) const char *f; { return build_message_string ("%s: ", f); } /* Format a MESSAGE into BUFFER. Automatically wrap lines. */ static void output_do_printf (buffer, msg) output_buffer *buffer; const char *msg; { char *message = vbuild_message_string (msg, output_buffer_format_args (buffer)); wrap_text (buffer, message, message + strlen (message)); free (message); } /* Format a message into BUFFER a la printf. */ void output_printf VPARAMS ((struct output_buffer *buffer, const char *msgid, ...)) { va_list *old_args; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, output_buffer *, buffer); VA_FIXEDARG (ap, const char *, msgid); old_args = output_buffer_ptr_to_format_args (buffer); output_buffer_ptr_to_format_args (buffer) = ≈ output_do_printf (buffer, _(msgid)); output_buffer_ptr_to_format_args (buffer) = old_args; VA_CLOSE (ap); } /* Print a message relevant to the given DECL. */ static void format_with_decl (buffer, decl) output_buffer *buffer; tree decl; { const char *p; /* Do magic to get around lack of varargs support for insertion of arguments into existing list. We know that the decl is first; we ass_u_me that it will be printed with "%s". */ for (p = output_buffer_text_cursor (buffer); *p; ++p) { if (*p == '%') { if (*(p + 1) == '%') ++p; else if (*(p + 1) != 's') abort (); else break; } } /* Print the left-hand substring. */ maybe_wrap_text (buffer, output_buffer_text_cursor (buffer), p); if (*p == '%') /* Print the name. */ { const char *const n = (DECL_NAME (decl) ? (*decl_printable_name) (decl, 2) : _("((anonymous))")); output_add_string (buffer, n); while (*p) { ++p; if (ISALPHA (*(p - 1) & 0xFF)) break; } } if (*p) /* Print the rest of the message. */ { output_buffer_text_cursor (buffer) = p; output_format (buffer); } } /* Report a diagnostic MESSAGE at the declaration DECL. MSG is a format string which uses %s to substitute the declaration name; subsequent substitutions are a la output_format. */ static void diagnostic_for_decl (decl, msgid, args_ptr, warn) tree decl; const char *msgid; va_list *args_ptr; int warn; { output_state os; if (diagnostic_lock++) error_recursion (); if (count_error (warn)) { os = output_buffer_state (diagnostic_buffer); report_error_function (DECL_SOURCE_FILE (decl)); output_set_prefix (diagnostic_buffer, context_as_prefix (DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl), warn)); output_buffer_ptr_to_format_args (diagnostic_buffer) = args_ptr; output_buffer_text_cursor (diagnostic_buffer) = _(msgid); format_with_decl (diagnostic_buffer, decl); diagnostic_finish ((output_buffer *) global_dc); output_destroy_prefix (diagnostic_buffer); output_buffer_state (diagnostic_buffer) = os; } diagnostic_lock--; } /* Count an error or warning. Return 1 if the message should be printed. */ int count_error (warningp) int warningp; { if (warningp && !diagnostic_report_warnings_p ()) return 0; if (warningp && !warnings_are_errors) warningcount++; else { static int warning_message = 0; if (warningp && !warning_message) { verbatim ("%s: warnings being treated as errors\n", progname); warning_message = 1; } errorcount++; } return 1; } /* Print a diagnostic MSGID on FILE. This is just fprintf, except it runs its second argument through gettext. */ void fnotice VPARAMS ((FILE *file, const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, FILE *, file); VA_FIXEDARG (ap, const char *, msgid); vfprintf (file, _(msgid), ap); VA_CLOSE (ap); } /* Print a fatal I/O error message. Argument are like printf. Also include a system error message based on `errno'. */ void fatal_io_error VPARAMS ((const char *msgid, ...)) { output_state os; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); os = output_buffer_state (diagnostic_buffer); output_printf (diagnostic_buffer, "%s: %s: ", progname, xstrerror (errno)); output_buffer_ptr_to_format_args (diagnostic_buffer) = ≈ output_buffer_text_cursor (diagnostic_buffer) = _(msgid); output_format (diagnostic_buffer); diagnostic_finish ((output_buffer *) global_dc); output_buffer_state (diagnostic_buffer) = os; VA_CLOSE (ap); exit (FATAL_EXIT_CODE); } /* Issue a pedantic warning MSGID. */ void pedwarn VPARAMS ((const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, input_filename, lineno, !flag_pedantic_errors); report_diagnostic (&dc); VA_CLOSE (ap); } /* Issue a pedantic waring about DECL. */ void pedwarn_with_decl VPARAMS ((tree decl, const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, tree, decl); VA_FIXEDARG (ap, const char *, msgid); /* We don't want -pedantic-errors to cause the compilation to fail from "errors" in system header files. Sometimes fixincludes can't fix what's broken (eg: unsigned char bitfields - fixing it may change the alignment which will cause programs to mysteriously fail because the C library or kernel uses the original layout). There's no point in issuing a warning either, it's just unnecessary noise. */ if (!DECL_IN_SYSTEM_HEADER (decl)) diagnostic_for_decl (decl, msgid, &ap, !flag_pedantic_errors); VA_CLOSE (ap); } /* Same as above but within the context FILE and LINE. */ void pedwarn_with_file_and_line VPARAMS ((const char *file, int line, const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, file); VA_FIXEDARG (ap, int, line); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, file, line, !flag_pedantic_errors); report_diagnostic (&dc); VA_CLOSE (ap); } /* Just apologize with MSGID. */ void sorry VPARAMS ((const char *msgid, ...)) { output_state os; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); ++sorrycount; os = output_buffer_state (diagnostic_buffer); output_set_prefix (diagnostic_buffer, context_as_prefix (input_filename, lineno, 0)); output_printf (diagnostic_buffer, "sorry, not implemented: "); output_buffer_ptr_to_format_args (diagnostic_buffer) = ≈ output_buffer_text_cursor (diagnostic_buffer) = _(msgid); output_format (diagnostic_buffer); diagnostic_finish ((output_buffer *) global_dc); output_buffer_state (diagnostic_buffer) = os; VA_CLOSE (ap); } /* Called when the start of a function definition is parsed, this function prints on stderr the name of the function. */ void announce_function (decl) tree decl; { if (! quiet_flag) { if (rtl_dump_and_exit) verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); else verbatim (" %s", (*decl_printable_name) (decl, 2)); fflush (stderr); output_needs_newline (diagnostic_buffer) = 1; record_last_error_function (); } } /* The default function to print out name of current function that caused an error. */ void default_print_error_function (context, file) diagnostic_context *context; const char *file; { if (error_function_changed ()) { char *prefix = file ? build_message_string ("%s: ", file) : NULL; output_state os; os = output_buffer_state (context); output_set_prefix ((output_buffer *) context, prefix); if (current_function_decl == NULL) output_add_string ((output_buffer *) context, _("At top level:")); else { if (TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE) output_printf ((output_buffer *) context, "In member function `%s':", (*decl_printable_name) (current_function_decl, 2)); else output_printf ((output_buffer *) context, "In function `%s':", (*decl_printable_name) (current_function_decl, 2)); } output_add_newline ((output_buffer *) context); record_last_error_function (); output_buffer_to_stream ((output_buffer *) context); output_buffer_state (context) = os; free ((char*) prefix); } } /* Prints out, if necessary, the name of the current function that caused an error. Called from all error and warning functions. We ignore the FILE parameter, as it cannot be relied upon. */ void report_error_function (file) const char *file ATTRIBUTE_UNUSED; { report_problematic_module ((output_buffer *) global_dc); (*print_error_function) (global_dc, input_filename); } void error_with_file_and_line VPARAMS ((const char *file, int line, const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, file); VA_FIXEDARG (ap, int, line); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, file, line, /* warn = */ 0); report_diagnostic (&dc); VA_CLOSE (ap); } void error_with_decl VPARAMS ((tree decl, const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, tree, decl); VA_FIXEDARG (ap, const char *, msgid); diagnostic_for_decl (decl, msgid, &ap, /* warn = */ 0); VA_CLOSE (ap); } /* Report an error message. The arguments are like that of printf. */ void error VPARAMS ((const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, input_filename, lineno, /* warn = */ 0); report_diagnostic (&dc); VA_CLOSE (ap); } /* Likewise, except that the compilation is terminated after printing the error message. */ void fatal_error VPARAMS ((const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, input_filename, lineno, /* warn = */ 0); report_diagnostic (&dc); VA_CLOSE (ap); fnotice (stderr, "compilation terminated.\n"); exit (FATAL_EXIT_CODE); } /* Report a compiler error at the current line number. Allow a front end to intercept the message. */ static void (*internal_error_function) PARAMS ((const char *, va_list *)); /* Set the function to call when a compiler error occurs. */ void set_internal_error_function (f) void (*f) PARAMS ((const char *, va_list *)); { internal_error_function = f; } void internal_error VPARAMS ((const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); if (diagnostic_lock) error_recursion (); #ifndef ENABLE_CHECKING if (errorcount > 0 || sorrycount > 0) { fnotice (stderr, "%s:%d: confused by earlier errors, bailing out\n", input_filename, lineno); exit (FATAL_EXIT_CODE); } #endif if (internal_error_function != 0) (*internal_error_function) (_(msgid), &ap); set_diagnostic_context (&dc, msgid, &ap, input_filename, lineno, /* warn = */0); report_diagnostic (&dc); VA_CLOSE (ap); fnotice (stderr, "Please submit a full bug report,\n\ with preprocessed source if appropriate.\n\ See %s for instructions.\n", GCCBUGURL); exit (FATAL_EXIT_CODE); } void warning_with_file_and_line VPARAMS ((const char *file, int line, const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, file); VA_FIXEDARG (ap, int, line); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, file, line, /* warn = */ 1); report_diagnostic (&dc); VA_CLOSE (ap); } void warning_with_decl VPARAMS ((tree decl, const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, tree, decl); VA_FIXEDARG (ap, const char *, msgid); diagnostic_for_decl (decl, msgid, &ap, /* warn = */ 1); VA_CLOSE (ap); } void warning VPARAMS ((const char *msgid, ...)) { diagnostic_context dc; VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); set_diagnostic_context (&dc, msgid, &ap, input_filename, lineno, /* warn = */ 1); report_diagnostic (&dc); VA_CLOSE (ap); } /* Flush diagnostic_buffer content on stderr. */ static void diagnostic_finish (buffer) output_buffer *buffer; { output_buffer_to_stream (buffer); clear_diagnostic_info (buffer); fputc ('\n', output_buffer_attached_stream (buffer)); fflush (output_buffer_attached_stream (buffer)); } /* Helper subroutine of output_verbatim and verbatim. Do the appropriate settings needed by BUFFER for a verbatim formatting. */ static void output_do_verbatim (buffer, msgid, args_ptr) output_buffer *buffer; const char *msgid; va_list *args_ptr; { output_state os; os = output_buffer_state (buffer); output_prefix (buffer) = NULL; diagnostic_prefixing_rule (buffer) = DIAGNOSTICS_SHOW_PREFIX_NEVER; output_buffer_text_cursor (buffer) = _(msgid); output_buffer_ptr_to_format_args (buffer) = args_ptr; output_set_maximum_length (buffer, 0); output_format (buffer); output_buffer_state (buffer) = os; } /* Output MESSAGE verbatim into BUFFER. */ void output_verbatim VPARAMS ((output_buffer *buffer, const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, output_buffer *, buffer); VA_FIXEDARG (ap, const char *, msgid); output_do_verbatim (buffer, msgid, &ap); VA_CLOSE (ap); } /* Same as above but use diagnostic_buffer. */ void verbatim VPARAMS ((const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); output_do_verbatim (diagnostic_buffer, msgid, &ap); output_buffer_to_stream (diagnostic_buffer); VA_CLOSE (ap); } /* Report a diagnostic message (an error or a warning) as specified by DC. This function is *the* subroutine in terms of which front-ends should implement their specific diagnostic handling modules. The front-end independent format specifiers are exactly those described in the documentation of output_format. */ void report_diagnostic (dc) diagnostic_context *dc; { output_state os; if (diagnostic_lock++) error_recursion (); if (count_error (diagnostic_is_warning (dc))) { os = output_buffer_state (diagnostic_buffer); diagnostic_msg = diagnostic_message (dc); diagnostic_args = diagnostic_argument_list (dc); (*diagnostic_starter (dc)) (diagnostic_buffer, dc); output_format (diagnostic_buffer); (*diagnostic_finalizer (dc)) (diagnostic_buffer, dc); diagnostic_finish ((output_buffer *) global_dc); output_buffer_state (diagnostic_buffer) = os; } diagnostic_lock--; } /* Inform the user that an error occurred while trying to report some other error. This indicates catastrophic internal inconsistencies, so give up now. But do try to flush out the previous error. This mustn't use internal_error, that will cause infinite recursion. */ static void error_recursion () { if (diagnostic_lock < 3) diagnostic_finish ((output_buffer *) global_dc); fnotice (stderr, "Internal compiler error: Error reporting routines re-entered.\n"); fnotice (stderr, "Please submit a full bug report,\n\ with preprocessed source if appropriate.\n\ See %s for instructions.\n", GCCBUGURL); exit (FATAL_EXIT_CODE); } /* Given a partial pathname as input, return another pathname that shares no directory elements with the pathname of __FILE__. This is used by fancy_abort() to print `Internal compiler error in expr.c' instead of `Internal compiler error in ../../GCC/gcc/expr.c'. */ const char * trim_filename (name) const char *name; { static const char this_file[] = __FILE__; const char *p = name, *q = this_file; /* First skip any "../" in each filename. This allows us to give a proper reference to a file in a subdirectory. */ while (p[0] == '.' && p[1] == '.' && (p[2] == DIR_SEPARATOR #ifdef DIR_SEPARATOR_2 || p[2] == DIR_SEPARATOR_2 #endif )) p += 3; while (q[0] == '.' && q[1] == '.' && (q[2] == DIR_SEPARATOR #ifdef DIR_SEPARATOR_2 || p[2] == DIR_SEPARATOR_2 #endif )) q += 3; /* Now skip any parts the two filenames have in common. */ while (*p == *q && *p != 0 && *q != 0) p++, q++; /* Now go backwards until the previous directory separator. */ while (p > name && p[-1] != DIR_SEPARATOR #ifdef DIR_SEPARATOR_2 && p[-1] != DIR_SEPARATOR_2 #endif ) p--; return p; } /* Report an internal compiler error in a friendly manner and without dumping core. */ void fancy_abort (file, line, function) const char *file; int line; const char *function; { internal_error ("Internal compiler error in %s, at %s:%d", function, trim_filename (file), line); } /* Setup DC for reporting a diagnostic MESSAGE (an error or a WARNING), using arguments pointed to by ARGS_PTR, issued at a location specified by FILE and LINE. */ void set_diagnostic_context (dc, msgid, args_ptr, file, line, warn) diagnostic_context *dc; const char *msgid; va_list *args_ptr; const char *file; int line; int warn; { memset (dc, 0, sizeof (diagnostic_context)); diagnostic_message (dc) = _(msgid); diagnostic_argument_list (dc) = args_ptr; diagnostic_file_location (dc) = file; diagnostic_line_location (dc) = line; diagnostic_is_warning (dc) = warn; diagnostic_starter (dc) = diagnostic_starter (global_dc); diagnostic_finalizer (dc) = diagnostic_finalizer (global_dc); } void report_problematic_module (buffer) output_buffer *buffer; { struct file_stack *p; if (output_needs_newline (buffer)) { output_add_newline (buffer); output_needs_newline (buffer) = 0; } if (input_file_stack && input_file_stack->next != 0 && error_module_changed ()) { for (p = input_file_stack->next; p; p = p->next) if (p == input_file_stack->next) output_verbatim (buffer, "In file included from %s:%d", p->name, p->line); else output_verbatim (buffer, ",\n from %s:%d", p->name, p->line); output_verbatim (buffer, ":\n"); record_last_error_module (); } } static void default_diagnostic_starter (buffer, dc) output_buffer *buffer; diagnostic_context *dc; { report_error_function (diagnostic_file_location (dc)); output_set_prefix (buffer, context_as_prefix (diagnostic_file_location (dc), diagnostic_line_location (dc), diagnostic_is_warning (dc))); } static void default_diagnostic_finalizer (buffer, dc) output_buffer *buffer; diagnostic_context *dc __attribute__((__unused__)); { output_destroy_prefix (buffer); } void warn_deprecated_use (node) tree node; { if (node == 0 || !warn_deprecated_decl) return; if (DECL_P (node)) warning ("`%s' is deprecated (declared at %s:%d)", IDENTIFIER_POINTER (DECL_NAME (node)), DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node)); else if (TYPE_P (node)) { const char *what = NULL; tree decl = TYPE_STUB_DECL (node); if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) what = IDENTIFIER_POINTER (TYPE_NAME (node)); else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL && DECL_NAME (TYPE_NAME (node))) what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))); if (what) { if (decl) warning ("`%s' is deprecated (declared at %s:%d)", what, DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); else warning ("`%s' is deprecated", what); } else if (decl) warning ("type is deprecated (declared at %s:%d)", DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); else warning ("type is deprecated"); } }