https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102633
Bug ID: 102633
Summary: warning for self-initialization despite -Wno-init-self
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC issues -Wuninitialized for cv-qualified variables initialized with
themselves even when -Wno-init-self is in effect.
$ cat x.c && gcc -O2 -S -Wall -Wno-init-self -xc++ x.c
int f (void)
{
int i = i; // no warning (good)
return i;
}
int g (void)
{
const int i = i; // -Wuninitialized (bug)
return i;
}
int h (void)
{
volatile int i = i; // -Wuninitialized (bug)
return i;
}
x.c: In function ‘int g()’:
x.c:9:13: warning: ‘i’ is used uninitialized [-Wuninitialized]
9 | const int i = i; // -Wuninitialized (bug)
| ^
x.c:9:13: note: ‘i’ was declared here
9 | const int i = i; // -Wuninitialized (bug)
| ^
x.c: In function ‘int h()’:
x.c:15:20: warning: ‘i’ is used uninitialized [-Wuninitialized]
15 | volatile int i = i; // -Wuninitialized (bug)
| ^
x.c:15:16: note: ‘i’ declared here
15 | volatile int i = i; // -Wuninitialized (bug)
| ^
