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+++ This bug was initially created as a clone of Bug #783439 +++
Description of problem:
In libvirt we are implementing callbacks for the avc_log_callback struct. When compiling with -Werror=missing-format-attribute, we get a warning caused by the selinux/avc.h header file:
CC libvirt_driver_access_la-viraccessdriverselinux.lo
access/viraccessdriverselinux.c:59:5: error: initialization left-hand side might be a candidate for a format attribute [-Werror=missing-format-attribute]
access/viraccessdriverselinux.c: In function 'virAccessDriverSELinuxAVCCreateThread':
access/viraccessdriverselinux.c:247:9: error: expected expression before ')' token
This is caused by this struct definition:
struct avc_log_callback {
/* log the printf-style format and arguments. */
void (*func_log) (const char *fmt, ...);
Which should have an annotation like:
struct avc_log_callback {
/* log the printf-style format and arguments. */
void (*func_log) (const char *fmt, ...) __attribute__ ((__format__(printf, 1, 2)));
This ensures the compiler does strict argument checking
Version-Release number of selected component (if applicable):
libselinux-2.1.6-5.fc16.x86_64
Affects all Fedora releases & all RHEL