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 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 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 32 int main(int argc, char **argv) { 33 LimitStackAndReexec(argc, argv); 34 volatile int res; 35 return *recurse(argc + 1, &res); 36 } 37
