https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77299
Bug ID: 77299
Summary: No warning for unused "INT64_MAX" and similar
constants
Product: gcc
Version: 6.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wipedout at yandex dot ru
Target Milestone: ---
On http://gcc.godbolt.org/ I select gcc 6.1 and specify -O3 -Wall
The code is:
#include <stdint.h>
int main()
{
INT64_MIN; // no warning
INT64_MIN; // no warning
INT64_MAX; // -Wunused-value
INT64_MAX; // -Wunused-value
1; // -Wunused-value
0; // -Wunused-value
INT64_MIN + 0; // -Wunused-value
}
For some reason there's no warning where unused INT64_MIN occurs.
