https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121944
Bug ID: 121944
Summary: -Wold-style-declaration: False negative with 'auto
static' (C23)
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: [email protected]
Target Milestone: ---
alx@debian:~/tmp/auto$ cat autostatic.c
int
main(void)
{
int static is;
auto static as2 = 0;
}
alx@debian:~/tmp/auto$ gcc -std=c23 -Wall -Wextra autostatic.c -Wno-unused
autostatic.c: In function ‘main’:
autostatic.c:4:9: warning: ‘static’ is not at beginning of declaration
[-Wold-style-declaration]
4 | int static is;
| ^~~
This auto acts as a type specifier, similar to int. 'static' should thus go
first, and this declaration has them reversed. I'd expect this diagnostic to
trigger.
While the C23 standard says it's still a storage-class specifier, that's weird,
and shouldn't stop us from diagnosing this.
