blob: 5fd497eaedbefe1de4d75ef0b669c4f5e33cfa77 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
// Check that stores in signal handlers are not recorded in origin history.
// This is, in fact, undesired behavior caused by our chained origins
// implementation being not async-signal-safe.
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
// RUN: not %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
#include <signal.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
volatile int x, y;
void SignalHandler(int signo) {
y = x;
}
int main(int argc, char *argv[]) {
int volatile z;
x = z;
signal(SIGUSR1, SignalHandler);
kill(getpid(), SIGUSR1);
signal(SIGUSR1, SIG_DFL);
return y;
}
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK-NOT: in SignalHandler
|
