diff options
Diffstat (limited to 'gcc/cp/decl.c')
| -rw-r--r-- | gcc/cp/decl.c | 219 |
1 files changed, 213 insertions, 6 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index 48f8d8c55fd..9400a8b4576 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -229,10 +229,17 @@ int function_depth; with __attribute__((deprecated)). An object declared as __attribute__((deprecated)) suppresses warnings of uses of other deprecated items. */ +/* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ +/* An object declared as __attribute__((unavailable)) suppresses + any reports of being declared with unavailable or deprecated + items. */ +/* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ enum deprecated_states { DEPRECATED_NORMAL, DEPRECATED_SUPPRESS + /* APPLE LOCAL "unavailable" attribute (radar 2809697) */ + , DEPRECATED_UNAVAILABLE_SUPPRESS }; static enum deprecated_states deprecated_state = DEPRECATED_NORMAL; @@ -2846,6 +2853,45 @@ initialize_predefined_identifiers (void) if (pid->ctor_or_dtor_p) IDENTIFIER_CTOR_OR_DTOR_P (*pid->node) = 1; } + /* APPLE LOCAL begin KEXT 2.95-ptmf-compatibility --turly */ + if (flag_apple_kext) + { + /* This is snarfed from the 2.95 cp-tree.h. The mechanism is + completely different from gcc3 (see cp-tree.h, and read the + comment just above 'enum ptrmemfunc_vbit_where_t'. Sigh. + + A 2.95 pointer-to-function member type looks like: + + struct { + short __delta; + short __index; + union { + P __pfn; + short __delta2; + } __pfn_or_delta2; + }; + + where P is a POINTER_TYPE to a METHOD_TYPE appropriate for the + pointer to member. The fields are used as follows: + + If __INDEX is -1, then the function to call is non-virtual, and + is located at the address given by __PFN. + + If __INDEX is zero, then this a NULL pointer-to-member. + + Otherwise, the function to call is virtual. Then, __DELTA2 gives + the offset from an instance of the object to the virtual function + table, and __INDEX - 1 is the index into the vtable to use to + find the function. + + The value to use for the THIS parameter is the address of the + object plus __DELTA. */ + + delta2_identifier = get_identifier ("__delta2"); + index_identifier = get_identifier ("__index"); + pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2"); + } + /* APPLE LOCAL end KEXT 2.95-ptmf-compatibility --turly */ } /* Create the predefined scalar types of C, @@ -2930,6 +2976,11 @@ cxx_init_decl_processing (void) record_builtin_type (RID_MAX, NULL, string_type_node); #endif + /* APPLE LOCAL begin KEXT 2.95-ptmf-compatibility --turly */ + if (flag_apple_kext) + delta_type_node = short_integer_type_node; + else + /* APPLE LOCAL end KEXT 2.95-ptmf-compatibility --turly */ delta_type_node = ptrdiff_type_node; vtable_index_type = ptrdiff_type_node; @@ -3037,6 +3088,13 @@ cxx_init_decl_processing (void) /* Show we use EH for cleanups. */ if (flag_exceptions) using_eh_for_cleanups (); + + /* APPLE LOCAL begin fwritable strings. */ + /* Maintain consistency. Perhaps we should just complain if they + say -fwritable-strings? */ + if (flag_writable_strings) + flag_const_strings = 0; + /* APPLE LOCAL end fwritable strings. */ } /* Generate an initializer for a function naming variable from @@ -3150,8 +3208,18 @@ builtin_function_1 (const char* name, /* Warn if a function in the namespace for users is used without an occasion to consider it declared. */ - if (name[0] != '_' || name[1] != '_') + /* APPLE LOCAL begin AltiVec */ + if ((name[0] != '_' || name[1] != '_') +#ifdef TARGET_POWERPC + /* AltiVec PIM builtins, even though they do not begin with + underscores, need not be declared either. */ + && !(class == BUILT_IN_MD + && code >= ALTIVEC_PIM__FIRST + && code <= ALTIVEC_PIM__LAST) +#endif /* TARGET_POWERPC */ + ) DECL_ANTICIPATED (decl) = 1; + /* APPLE LOCAL end AltiVec */ /* Possibly apply some default attributes to this built-in function. */ if (attrs) @@ -3188,7 +3256,10 @@ builtin_function (const char* name, { /* All builtins that don't begin with an '_' should additionally go in the 'std' namespace. */ - if (name[0] != '_') + /* APPLE LOCAL begin alloca not in std */ + /* Don't use `std' namespace for alloca. */ + if (name[0] != '_' && strcmp (name, "alloca")) + /* APPLE LOCAL end alloca not in std */ { push_namespace (std_identifier); builtin_function_1 (name, type, std_node, code, cl, libname, attrs); @@ -3566,6 +3637,8 @@ start_decl (const cp_declarator *declarator, tree decl; tree type, tem; tree context; + /* APPLE LOCAL "unavailable" attribute (radar 2809697) */ + tree a; *pushed_scope_p = NULL_TREE; @@ -3576,10 +3649,34 @@ start_decl (const cp_declarator *declarator, have_extern_spec = false; } - /* An object declared as __attribute__((deprecated)) suppresses - warnings of uses of other deprecated items. */ + /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ + /* An object declared as __attribute__((unavailable)) suppresses + any reports of being declared with unavailable or deprecated + items. An object declared as __attribute__((deprecated)) + suppresses warnings of uses of other deprecated items. */ +#ifdef A_LESS_INEFFICENT_WAY /* which I really don't want to do! */ if (lookup_attribute ("deprecated", attributes)) deprecated_state = DEPRECATED_SUPPRESS; + else if (lookup_attribute ("unavailable", attributes)) + deprecated_state = DEPRECATED_UNAVAILABLE_SUPPRESS; +#else /* a more efficient way doing what lookup_attribute would do */ + for (a = attributes; a; a = TREE_CHAIN (a)) + { + tree name = TREE_PURPOSE (a); + if (TREE_CODE (name) == IDENTIFIER_NODE) + if (is_attribute_p ("deprecated", name)) + { + deprecated_state = DEPRECATED_SUPPRESS; + break; + } + if (is_attribute_p ("unavailable", name)) + { + deprecated_state = DEPRECATED_UNAVAILABLE_SUPPRESS; + break; + } + } +#endif + /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ attributes = chainon (attributes, prefix_attributes); @@ -4610,7 +4707,19 @@ make_rtl_for_nonlocal_decl (tree decl, tree init, const char* asmspec) && DECL_IMPLICIT_INSTANTIATION (decl)) defer_p = 1; - /* If we're not deferring, go ahead and assemble the variable. */ + + /* APPLE LOCAL begin static const members 20020110 --turly */ + /* Static const members which require runtime initialisation should + not be placed in readonly memory. Avoid this by temporarily + whacking the TREE_READONLY bit. */ + if (!defer_p && init != NULL_TREE && TREE_READONLY (decl) && toplev) + { + TREE_READONLY (decl) = 0; + rest_of_decl_compilation (decl, toplev, at_eof); + TREE_READONLY (decl) = 1; + } + else + /* APPLE LOCAL end static const members 20020110 --turly */ if (!defer_p) rest_of_decl_compilation (decl, toplev, at_eof); } @@ -5994,6 +6103,37 @@ build_ptrmemfunc_type (tree type) unqualified_variant = build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type)); + /* APPLE LOCAL begin KEXT 2.95-ptmf-compatibility --turly */ + if (flag_apple_kext) + { + tree u = make_aggr_type (UNION_TYPE); + SET_IS_AGGR_TYPE (u, 0); + xref_basetypes (u, NULL_TREE); + fields = build_decl (FIELD_DECL, delta2_identifier, delta_type_node); + TREE_CHAIN (fields) + = build_decl (FIELD_DECL, pfn_identifier, type); + finish_builtin_struct (u, "__ptrmemfunc_type", fields, ptr_type_node); + TYPE_NAME (u) = NULL_TREE; + + t = make_aggr_type (RECORD_TYPE); + xref_basetypes (t, NULL_TREE); + + /* Let the front-end know this is a pointer to member function... */ + TYPE_PTRMEMFUNC_FLAG (t) = 1; + /* ... and not really an aggregate. */ + SET_IS_AGGR_TYPE (t, 0); + + fields = build_decl (FIELD_DECL, pfn_or_delta2_identifier, u); + TREE_CHAIN (fields) = + build_decl (FIELD_DECL, index_identifier, delta_type_node); + TREE_CHAIN (TREE_CHAIN (fields)) = + build_decl (FIELD_DECL, delta_identifier, delta_type_node); + finish_builtin_struct (t, "__ptrmemfunc_type", fields, ptr_type_node); + } + else + { + /* APPLE LOCAL end KEXT 2.95-ptmf-compatibility --turly */ + t = make_aggr_type (RECORD_TYPE); xref_basetypes (t, NULL_TREE); @@ -6010,6 +6150,8 @@ build_ptrmemfunc_type (tree type) fields = field; finish_builtin_struct (t, "__ptrmemfunc_type", fields, ptr_type_node); + /* APPLE LOCAL KEXT 2.95-ptmf-compatibility --turly */ + } /* Zap out the name so that the back-end will give us the debugging information for this anonymous RECORD_TYPE. */ @@ -6491,6 +6633,8 @@ grokdeclarator (const cp_declarator *declarator, cp_decl_spec ds; cp_storage_class storage_class; bool unsigned_p, signed_p, short_p, long_p, thread_p; + /* APPLE LOCAL CW asm blocks */ + bool cw_asm_p; bool type_was_error_mark_node = false; signed_p = declspecs->specs[(int)ds_signed]; @@ -6498,6 +6642,8 @@ grokdeclarator (const cp_declarator *declarator, short_p = declspecs->specs[(int)ds_short]; long_p = declspecs->specs[(int)ds_long]; thread_p = declspecs->specs[(int)ds_thread]; + /* APPLE LOCAL CW asm blocks */ + cw_asm_p = declspecs->specs[(int)ds_cw_asm]; if (decl_context == FUNCDEF) funcdef_flag = 1, decl_context = NORMAL; @@ -6696,6 +6842,19 @@ grokdeclarator (const cp_declarator *declarator, type = NULL_TREE; type_was_error_mark_node = true; } + + /* APPLE LOCAL begin unavailable attribute (radar 2809697) --bowdidge */ + /* If the entire declaration is itself tagged as unavailable then + suppress reports of unavailable/deprecated items. If the + entire declaration is tagged as only deprecated we still + report unavailable uses. */ + if (type && TREE_DEPRECATED (type) && TREE_UNAVAILABLE (type)) + { + if (deprecated_state != DEPRECATED_UNAVAILABLE_SUPPRESS) + warn_deprecated_use (type); + } + else + /* APPLE LOCAL end unavailable attribute (radar 2809697) --bowdidge */ /* If the entire declaration is itself tagged as deprecated then suppress reports of deprecated items. */ if (type && TREE_DEPRECATED (type) @@ -6752,6 +6911,8 @@ grokdeclarator (const cp_declarator *declarator, "typedef", "__complex", "__thread" + /* APPLE LOCAL CW asm blocks. */ + , "asm" }; error ("duplicate %qs", decl_spec_names[(int)ds]); } @@ -8199,6 +8360,21 @@ grokdeclarator (const cp_declarator *declarator, else if (storage_class == sc_static) DECL_THIS_STATIC (decl) = 1; + /* APPLE LOCAL begin CW asm blocks */ + if (cw_asm_p) + { + /* Record that this is a decl of a CW-style asm function. */ + if (flag_cw_asm_blocks) + { + DECL_CW_ASM_FUNCTION (decl) = 1; + DECL_CW_ASM_NORETURN (decl) = 0; + DECL_CW_ASM_FRAME_SIZE (decl) = -2; + } + else + error ("asm functions not enabled, use `-fasm-blocks'"); + } + /* APPLE LOCAL end CW asm blocks */ + /* Record constancy and volatility. There's no need to do this when processing a template; we'll do this for the instantiated declaration based on the type of DECL. */ @@ -10173,6 +10349,17 @@ start_preparsed_function (tree decl1, tree attrs, int flags) DECL_CONTEXT (cdtor_label) = current_function_decl; } + /* APPLE LOCAL begin CW asm blocks */ + /* If this was a function declared as an assembly function, change + the state to expect to see C++ decls, possibly followed by assembly + code. */ + if (DECL_CW_ASM_FUNCTION (current_function_decl)) + { + cw_asm_state = cw_asm_decls; + cw_asm_in_decl = 0; + } + /* APPLE LOCAL end CW asm blocks */ + start_fname_decls (); store_parm_decls (current_function_parms); @@ -10938,6 +11125,25 @@ cxx_maybe_build_cleanup (tree decl) tree rval; bool has_vbases = (TREE_CODE (type) == RECORD_TYPE && CLASSTYPE_VBASECLASSES (type)); + /* APPLE LOCAL begin KEXT double destructor */ + special_function_kind dtor = sfk_complete_destructor; + if (flag_apple_kext + && has_apple_kext_compatibility_attr_p (type)) + { + /* If we have a trivial operator delete (), we can go ahead and + just use the deleting destructor, sfk_deleting_destructor. */ + + if (! has_empty_operator_delete_p (type) || pedantic) + { + cp_warning_at ("'%D' is an instance of a class which does " + "not allow global or stack-based objects; it " + "does not have an empty `operator delete', and " + "so it will ** NOT ** be destructed.", decl); + return NULL_TREE; + } + dtor = sfk_deleting_destructor; + } + /* APPLE LOCAL end KEXT double destructor */ if (TREE_CODE (type) == ARRAY_TYPE) rval = decl; @@ -10952,7 +11158,8 @@ cxx_maybe_build_cleanup (tree decl) flags |= LOOKUP_NONVIRTUAL; rval = build_delete (TREE_TYPE (rval), rval, - sfk_complete_destructor, flags, 0); + /* APPLE LOCAL KEXT double destructor */ + dtor, flags, 0); return rval; } |