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Diffstat (limited to 'gcc/doc/trouble.texi')
| -rw-r--r-- | gcc/doc/trouble.texi | 77 |
1 files changed, 2 insertions, 75 deletions
diff --git a/gcc/doc/trouble.texi b/gcc/doc/trouble.texi index d6ba63259d6..4a8f0c32fd1 100644 --- a/gcc/doc/trouble.texi +++ b/gcc/doc/trouble.texi @@ -338,47 +338,6 @@ you cannot successfully use @samp{$} in identifiers on the RS/6000 due to a restriction in the IBM assembler. GAS supports these identifiers. -@item -@opindex mno-serialize-volatile -There is an assembler bug in versions of DG/UX prior to 5.4.2.01 that -occurs when the @samp{fldcr} instruction is used. GCC uses -@samp{fldcr} on the 88100 to serialize volatile memory references. Use -the option @option{-mno-serialize-volatile} if your version of the -assembler has this bug. - -@item -On VMS, GAS versions 1.38.1 and earlier may cause spurious warning -messages from the linker. These warning messages complain of mismatched -psect attributes. You can ignore them. - -@item -On NewsOS version 3, if you include both of the files @file{stddef.h} -and @file{sys/types.h}, you get an error because there are two typedefs -of @code{size_t}. You should change @file{sys/types.h} by adding these -lines around the definition of @code{size_t}: - -@smallexample -#ifndef _SIZE_T -#define _SIZE_T -@var{actual-typedef-here} -#endif -@end smallexample - -@cindex Alliant -@item -On the Alliant, the system's own convention for returning structures -and unions is unusual, and is not compatible with GCC no matter -what options are used. - -@cindex RT PC -@cindex IBM RT PC -@item -@opindex mhc-struct-return -On the IBM RT PC, the MetaWare HighC compiler (hc) uses a different -convention for structure and union returning. Use the option -@option{-mhc-struct-return} to tell GCC to use a convention compatible -with it. - @cindex VAX calling convention @cindex Ultrix calling convention @item @@ -395,42 +354,10 @@ these options to produce code compatible with the Fortran compiler: @end smallexample @item -On the WE32k, you may find that programs compiled with GCC do not -work with the standard shared C library. You may need to link with -the ordinary C compiler. If you do so, you must specify the following -options: - -@smallexample --L/usr/local/lib/gcc-lib/we32k-att-sysv/2.8.1 -lgcc -lc_s -@end smallexample - -The first specifies where to find the library @file{libgcc.a} -specified with the @option{-lgcc} option. - -GCC does linking by invoking @command{ld}, just as @command{cc} does, and -there is no reason why it @emph{should} matter which compilation program -you use to invoke @command{ld}. If someone tracks this problem down, -it can probably be fixed easily. - -@item On the Alpha, you may get assembler errors about invalid syntax as a result of floating point constants. This is due to a bug in the C library functions @code{ecvt}, @code{fcvt} and @code{gcvt}. Given valid floating point numbers, they sometimes print @samp{NaN}. - -@item -On Irix 4.0.5F (and perhaps in some other versions), an assembler bug -sometimes reorders instructions incorrectly when optimization is turned -on. If you think this may be happening to you, try using the GNU -assembler; GAS version 2.1 supports ECOFF on Irix. - -@opindex noasmopt -Or use the @option{-noasmopt} option when you compile GCC with itself, -and then again when you compile your program. (This is a temporary -kludge to turn off assembler optimization on Irix.) If this proves to -be what you need, edit the assembler spec in the file @file{specs} so -that it unconditionally passes @option{-O0} to the assembler, and never -passes @option{-O2} or @option{-O3}. @end itemize @node External Bugs @@ -959,9 +886,9 @@ int Foo::bar = 0; @end example Other C++ compilers may not correctly implement the standard behavior. -As a result, when you switch to @code{g++} from one of these compilers, +As a result, when you switch to @command{g++} from one of these compilers, you may discover that a program that appeared to work correctly in fact -does not conform to the standard: @code{g++} reports as undefined +does not conform to the standard: @command{g++} reports as undefined symbols any static data members that lack definitions. @node Temporaries |