https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87310
Bug ID: 87310
Summary: -Wc90-c99-compat does not warn about bool usage
Product: gcc
Version: 8.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: kohanyi.robert at gmail dot com
Target Milestone: ---
Created attachment 44694
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44694&action=edit
gcc -v outputs
When compiling code that uses <stdbool.h> and bool declarations with
-Wc90-c99-compat (with or without -std=c90), no diagnostic is issued.
Something like this
#include <stdio.h>
#include <stdbool.h>
main() {
bool ok = true;
printf("%u\n", ok);
}
when compiled with
gcc -std=c90 -Wc90-c99-compat a.c
there's no warning, but I expected a warn about bool usage.
When it looks like this
#include <stdio.h>
main() {
_Bool ok = 1;
printf("%u\n", ok);
}
the warning `warning: ISO C90 does not support boolean types
[-Wc90-c99-compat]' is raised.
Tried with multiple version of gcc. Attached the output of different gcc -v
runs.
Try it here at tio.run: https://bit.ly/2CXnvXm
StackOverflow thread: https://stackoverflow.com/questions/52307780
