266a8d5cfe
Set SA_SIGINFO only if we set sighandler, or we can set the flag, and return it as 'old' without actual sigaction set. Reviewed By: melver Differential Revision: https://reviews.llvm.org/D108616
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
// RUN: %clangxx -std=c++11 -O0 -g %s -o %t && %run %t
|
|
|
|
#include <assert.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
|
|
static bool sahandler_done;
|
|
static bool sasigaction_done;
|
|
|
|
static void sahandler(int) { sahandler_done = true; }
|
|
|
|
static void sasigaction(int, siginfo_t *, void *) { sasigaction_done = true; }
|
|
|
|
template <typename T> void install(T *handler, struct sigaction *prev) {
|
|
bool siginfo = handler == (T *)&sasigaction;
|
|
struct sigaction act = {};
|
|
if (siginfo) {
|
|
act.sa_flags = SA_SIGINFO;
|
|
act.sa_sigaction = (decltype(act.sa_sigaction))handler;
|
|
} else {
|
|
act.sa_handler = (decltype(act.sa_handler))handler;
|
|
}
|
|
int ret = sigaction(SIGHUP, &act, prev);
|
|
assert(ret == 0);
|
|
|
|
if (handler == (T *)&sahandler) {
|
|
sahandler_done = false;
|
|
raise(SIGHUP);
|
|
assert(sahandler_done);
|
|
}
|
|
|
|
if (handler == (T *)&sasigaction) {
|
|
sasigaction_done = false;
|
|
raise(SIGHUP);
|
|
assert(sasigaction_done);
|
|
}
|
|
}
|
|
|
|
template <typename T1, typename T2> void test(T1 *from, T2 *to) {
|
|
install(from, nullptr);
|
|
struct sigaction prev = {};
|
|
install(to, &prev);
|
|
|
|
bool siginfo_from = (from == (T1 *)&sasigaction);
|
|
if (siginfo_from) {
|
|
assert(prev.sa_flags & SA_SIGINFO);
|
|
assert(prev.sa_sigaction == (decltype(prev.sa_sigaction))from);
|
|
} else {
|
|
assert((prev.sa_flags & SA_SIGINFO) == 0);
|
|
assert(prev.sa_handler == (decltype(prev.sa_handler))from);
|
|
}
|
|
}
|
|
|
|
template <typename T> void testAll(T *to) {
|
|
test(&sahandler, to);
|
|
test(&sasigaction, to);
|
|
test(SIG_IGN, to);
|
|
test(SIG_DFL, to);
|
|
}
|
|
|
|
int main(void) {
|
|
testAll(&sahandler);
|
|
testAll(&sasigaction);
|
|
testAll(SIG_IGN);
|
|
testAll(SIG_DFL);
|
|
}
|