https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63272
David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
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CC| |dcb314 at hotmail dot com
--- Comment #4 from David Binderman <dcb314 at hotmail dot com> ---
I can confirm that gcc version 11, some six years later, doesn't implement
this warning.
Fortunately, the cppcheck static analyser does.
Example code:
// Dangling pointer
void g( int *);
void f()
{
int a;
int * p = 0;
{
int b;
p = &b;
}
g( p);
}
$ /home/dcb/cppcheck/trunk/cppcheck oct30a.cc
oct30a.cc:16:5: error: Using pointer to local variable 'b' that is out of
scope. [invalidLifetime]
g( p);
^
oct30a.cc:14:7: note: Address of variable taken here.
p = &b;
^
oct30a.cc:12:7: note: Variable created here.
int b;
^
oct30a.cc:16:5: note: Using pointer to local variable 'b' that is out of scope.
g( p);
^
