https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86714
Bug ID: 86714
Summary: tree-ssa-forwprop.c confused by too long initializer
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: bernd.edlinger at hotmail dot de
Target Milestone: ---
as mentioned in https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01220.html
$ cat y.c
const char a[2][3] = { "1234", "xyz" };
char b[6];
int main ()
{
__builtin_memcpy(b, a, 4);
__builtin_memset(b + 4, 'a', 2);
__builtin_printf("%.6s\n", b);
}
$ gcc y.c
y.c:1:24: warning: initializer-string for array of chars is too long
const char a[2][3] = { "1234", "xyz" };
^~~~~~
y.c:1:24: note: (near initialization for 'a[0]')
$ ./a.out
1234aa
but expected would be "123xaa".
