http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53129
Bug #: 53129
Summary: Wself-assign
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: [email protected]
ReportedBy: [email protected]
void func()
{
int i = 2;
int x = 0; /* warn */
float f = 5.0;
double a[3];
i = i + 0; /* not warn */
f = f / 1; /* not warn */
a[1] = a[1]; /* warn */
i += 0; /* not warn */
x = x; /* warn */
}
manuel@gcc12:~$ clang -fsyntax-only -Wself-assign wselfassign.c
wselfassign.c:12:5: warning: explicitly assigning a variable of type 'int' to
itself [-Wself-assign]
x = x; /* warn */
~ ^ ~
1 warning generated.
An implementation was submitted to GCC but never approved here:
http://gcc.gnu.org/ml/gcc-patches/2010-06/msg02390.html
