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

[Daniel Webb <webb@robust.colorado.edu>]

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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