https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87422
Bug ID: 87422
Summary: duplicate warning for strcpy of an unterminated
character array
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC issues two instances of the same warning for the following simple test
case:
$ cat c.c && gcc -O2 -S -Wall -Wextra -Wpedantic
-fdump-tree-optimized=/dev/stdout c.c
const char a[3] = { '1', '2', '3' };
int f (void)
{
return __builtin_strlen (a); // duplicate warning
}
c.c: In function ‘f’:
c.c:5:29: warning: ‘strlen’ argument missing terminating nul
[-Wstringop-overflow=]
5 | return __builtin_strlen (a); // duplicate warning
| ^
c.c:1:12: note: referenced argument declared here
1 | const char a[3] = { '1', '2', '3' };
| ^
c.c:5:29: warning: ‘strlen’ argument missing terminating nul
[-Wstringop-overflow=]
5 | return __builtin_strlen (a); // duplicate warning
| ^
c.c:1:12: note: referenced argument declared here
1 | const char a[3] = { '1', '2', '3' };
| ^
