https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91632
Bug ID: 91632
Summary: [10 Regression] Probably wrong code since r275026
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
Since the revision, I see postgres11 teste-suite failing. There's a reduced
test-case:
$ cat url.c
static int
__attribute__((noipa))
p_isurlchar(char ch)
{
if (ch <= 0x20 || ch >= 0x7F)
return 0;
/* reject characters disallowed by RFC 3986 */
switch (ch)
{
case '"':
case '<':
case '>':
case '\\':
case '^':
case '`':
case '{':
case '|':
case '}':
return 0;
}
return 1;
}
int main()
{
const char *url = "http://aew.werc.ewr/?ad=qwe&dw";;
int r = p_isurlchar (url[0]);
__builtin_printf ("is_url: '%c': %d\n", url[0], r);
if (r == 0)
__builtin_abort ();
return 0;
}
$ gcc /tmp/url.c -O2 -fwrapv && ./a.out
is_url: 'h': 0
Aborted (core dumped)
$ gcc /tmp/url.c -fwrapv && ./a.out
is_url: 'h': 1
