internal error asm

[Ulrich Drepper]

Hi,

the following little piece of code crashed all gcc versions on ix86
which I could test:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include <stdio.h>

extern double bar (double);

int
baz (double d)
{
  double e = bar (d);
#ifdef BROKEN
  asm volatile ("" : : : "st");
#else
  asm volatile ("" : : : "memory");
#endif
  return printf ("%lg\n", e);
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

drepper@happy drepper$ gcc -Wa,-al -c v.c -O3 -DBROKEN
gcc: Internal compiler error: program cc1 got fatal signal 11

Not defining BROKEN lets the compiler finish but the result is not the
same (I want to force `e' being written to memory before calling
printf).  It's necessary to compile libm correctly.

-- Uli
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Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
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