1 // Test that ASan doesn't hang on stack overflow in recovery mode.
2 //
3 // RUN: %clang_asan -O0 -fsanitize-recover=address %s -o %t
4 // RUN: %env_asan_opts=halt_on_error=false not %run %t 2>&1 | FileCheck %s
5
6 #include <assert.h>
7 #include <unistd.h>
8 #include <sys/mman.h>
9 #include <sys/resource.h>
10
recurse(volatile int n,volatile int * p)11 static volatile int *recurse(volatile int n, volatile int *p) {
12 // CHECK: {{stack-overflow on address 0x.* \(pc 0x.* bp 0x.* sp 0x.* T.*\)}}
13 if (n >= 0) *recurse(n + 1, p) += n;
14 return p;
15 }
16
17
LimitStackAndReexec(int argc,char ** argv)18 void LimitStackAndReexec(int argc, char **argv) {
19 struct rlimit rlim;
20 int res = getrlimit(RLIMIT_STACK, &rlim);
21 assert(res == 0);
22 if (rlim.rlim_cur == RLIM_INFINITY) {
23 rlim.rlim_cur = 256 * 1024;
24 res = setrlimit(RLIMIT_STACK, &rlim);
25 assert(res == 0);
26
27 execv(argv[0], argv);
28 assert(0 && "unreachable");
29 }
30 }
31
main(int argc,char ** argv)32 int main(int argc, char **argv) {
33 LimitStackAndReexec(argc, argv);
34 volatile int res;
35 return *recurse(argc + 1, &res);
36 }
37