https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95461
Bug ID: 95461
Summary: GCC misses -Warray-bounds warning message
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: haoxintu at gmail dot com
Target Milestone: ---
This case test.cc
#include<iostream>
int main () {
int a[10] = {0};
a[11] = 0;
std::cout << "ok" << std::endl;
return 0;
}
produce nothing in gcc-trunk.
While in clang
$clang++ test.cc
test.cc:4:5: warning: array index 11 is past the end of the array (which
contains 10 elements) [-Warray-bounds]
a[11] = 0;
^ ~~
test.cc:3:5: note: array 'a' declared here
int a[10] = {0};
^
1 warning generated.
My gcc version is
g++ (GCC) 11.0.0 20200526 (experimental)
Copyright (C) 2020 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.
All GCC versions have this missing.
