https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78910
Bug ID: 78910
Summary: [7 Regression] Wrong print-return-value for a negative
number
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: msebor at gcc dot gnu.org
Target Milestone: ---
The issue can be seen in ICU package test-suite, in section decorated:
"Get really crazy with the formatting."
$ cat /tmp/printf-test.c
int main()
{
char b[128];
int l = __builtin_sprintf (b, "%.2d", -1);
__builtin_printf ("b: '%s', length: %d\n", b, l);
if (l != 3)
__builtin_abort ();
return 0;
}
$ gcc /tmp/printf-test.c -O2 && ./a.out
b: '-01', length: 2
Aborted (core dumped)
