Public bug reported:
GLib has a macro g_return_if_fail(), that returns from a function when a
precondition isn't met. gcc used to warn when calling it in a function
that returns a value, but stopped doing so in 4.8.
$ cat return-warning.c
#include <glib.h>
int function (int c)
{
g_return_if_fail (c > 100);
}
$ gcc-4.7 -c -Wreturn-type `pkg-config --cflags glib-2.0` return-warning.c
return-warning.c: In function ‘function’:
return-warning.c:6:3: warning: ‘return’ with no value, in function returning
non-void [-Wreturn-type]
$ gcc-4.8 -c -Wreturn-type `pkg-config --cflags glib-2.0` return-warning.c
$
** Affects: gcc-4.8 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1234218
Title:
4.8 doesn't throw -Wreturn-type anymore for wrong returns in macros
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