Bug#152709: gcc: __VA_ARGS__ stringification crashes preprocessor if __VA_ARGS__ is empty

[Matthias Klose <doko@cs.tu-berlin.de>]

tags 152709 + fixed
retitle 152709 [fixed in gcc-3.x] __VA_ARGS__ stringification crashes preprocessor if __VA_ARGS__ is empty 
reassign 152709 gcc-2.95
thanks

Daniel Webb writes:
> Package: gcc
> Version: 2:2.95.4-14
> Severity: normal
> 
> 
> -- System Information
> Debian Release: 3.0
> Kernel Version: Linux robust.colorado.edu 2.4.17 #1 SMP Sun Apr 21 21:05:15 MDT 2002 i686 unknown
> 
> Versions of the packages gcc depends on:
> ii  cpp            2.95.4-14      The GNU C preprocessor.
> ii  cpp-2.95       2.95.4-7       The GNU C preprocessor.
> ii  gcc-2.95       2.95.4-7       The GNU C compiler.
> 
> Example code:
> ------------------------------
> #define ASSERT(test_expression, ...) \
>     if (! (test_expression)) \
>         { \
>           fprintf(stderr, "Assertion failed: " #test_expression "\n"); \
>           fprintf(stderr, #__VA_ARGS__);  \
>           fprintf(stderr, "Function trace:\n"); \
>           exit(1); \
>         }
> 
> int main(void)
> {
> ASSERT(1>0);
> printf("run_tests(): Assertion failure.\n");
> ASSERT(0>1, "Test completed successfully.");
> 
> return 0;
> }
> ------------------------------
> 
> >gcc compiler_error.c
> gcc: Internal compiler error: program cpp0 got fatal signal 11
> 
> 
> 
> 
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