[Bug gas/21934] gas build fails when using gcc 7

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21934

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Here is a small testcase:

address@hidden config]$ cat /tmp/p.i
static char output_invalid_buf[sizeof (unsigned char) * 2 + 5];

char *
output_invalid (int c)
{
    __builtin_snprintf (output_invalid_buf, sizeof (output_invalid_buf),
              "(0x%x)", (unsigned char) c);
  return output_invalid_buf;
}
address@hidden config]$ gcc  -S -O2 -g -Wall /tmp/p.i -W
address@hidden config]$ gcc  -S -O2 -g -Wall /tmp/p.i -W -m32
address@hidden config]$ 

Please try it with your GCC 7.

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