return of C99 compound literal addresses doesn't yield warnings (original) (raw)

Extended Description

The following code warns about returning the adress of stack memory

struct stat *foo(void) { struct stat st;

return &st;

}

The following code doesn't:

struct stat *foo(void) { return &(struct stat){ 0, }; }

or this one either:

void (^blk_t)(void);

blk_t foo(void) { return ^{ (void)0; } };

This is somehow similar to the issues in #8675 (but in worse because here the programmer is really used to the compiler reporting these mistakes)