http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60256
Bug ID: 60256
Summary: No -Wuninitialized warning for strcpy
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
The pointer "s" is uninitialized, but used in the later call to strcpy.
$: cat s.c
#include<string.h>
void f(void) {
char* s;
strcpy(s, s);
}
$: gcc-trunk -Wuninitialized s.c -c
$: clang-trunk -Wuninitialized s.c -c
s.c:4:10: warning: variable 's' is uninitialized when used here
[-Wuninitialized]
strcpy(s, s);
^
s.c:3:10: note: initialize the variable 's' to silence this warning
char* s;
^
= NULL
1 warning generated.
$: gcc-trunk --version
gcc-trunk (GCC) 4.9.0 20140217 (experimental)
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
