Daniel P. Berrangé <berra...@redhat.com> writes:
$ gcc -Wall -Wuninitialized -o jump jump.c
Note that many GCC warnings don't trigger if you don't enable
optimizations. In the case you exhibit, adding -O is enough to get
a sensible warning:
$ gcc -Wall -O -o jump jump.c
jump.c: In function ‘main’:
jump.c:11:3: warning: ‘foo’ may be used uninitialized
[-Wmaybe-uninitialized]
11 | free(foo);
| ^~~~~~~~~
jump.c:8:9: note: ‘foo’ was declared here
8 | char *foo = malloc(30);
| ^~~
Best.
Sam
--
Samuel Tardieu
