https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69982
Bug ID: 69982
Summary: missing warning when using __thread with -std=c99
-pedantic
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: vincent-gcc at vinc17 dot net
Target Milestone: ---
When I compile the following program with -std=c99 -pedantic, I get a warning
for _Thread_local but not for __thread while both are invalid in C99. This is
not consistent!
__thread int x;
_Thread_local int y;
int main(void)
{
return 0;
}
I get:
$ gcc-snapshot -std=c99 -pedantic tst.c -o tst
tst.c:2:1: warning: ISO C99 does not support '_Thread_local' [-Wpedantic]
_Thread_local int y;
^~~~~~~~~~~~~
This occurs with:
gcc (Debian 20160125-1) 6.0.0 20160125 (experimental) [trunk revision 232803]
and previous versions such as 4.9.3 and 5.3.1.
