Consider this program:
-------------- a.c --------------------
#include <stdio.h>
int main()
{
int a = 10;
printf("%d\n", a);
printf("%0.4d\n", a);
return 0;
}
---------------------------------------
By compiling with:
gcc -Wall a.c
This warning gets displayed:
a.c:7: warning: '0' flag ignored with precision and %d printf format
The '0' flag isn't actually ignored, and it shouldn't be anyway, so I think the
warning is incorrect.
==============================
More details:
I found this on 4.2.1, but I also tried it on 4.1.0 and 4.3.1, and the result
is the same.
Both gcc and g++ show the warning (initially I found this in a C++ project and
then I checked to see if C code exhibits the same issue).
--
Summary: Incorrect warning "flag ignored with precision" in
printf
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ciobi at inbox dot com
GCC build triplet: x86_64-suse-linux
GCC host triplet: x86_64-suse-linux
GCC target triplet: x86_64-suse-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37648
