llvm-project/compiler-rt/lib/tsan/lit_tests/simple_stack.c

67 lines
2.0 KiB
C

// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
int Global;
void __attribute__((noinline)) foo1() {
Global = 42;
}
void __attribute__((noinline)) bar1() {
volatile int tmp = 42; (void)tmp;
foo1();
}
void __attribute__((noinline)) foo2() {
volatile int v = Global; (void)v;
}
void __attribute__((noinline)) bar2() {
volatile int tmp = 42; (void)tmp;
foo2();
}
void *Thread1(void *x) {
sleep(1);
bar1();
return NULL;
}
void *Thread2(void *x) {
bar2();
return NULL;
}
void StartThread(pthread_t *t, void *(*f)(void*)) {
pthread_create(t, NULL, f, NULL);
}
int main() {
pthread_t t[2];
StartThread(&t[0], Thread1);
StartThread(&t[1], Thread2);
pthread_join(t[0], NULL);
pthread_join(t[1], NULL);
return 0;
}
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK-NEXT: Write of size 4 at {{.*}} by thread T1:
// CHECK-NEXT: #0 foo1{{.*}} {{.*}}simple_stack.c:9{{(:3)?}} ({{.*}})
// CHECK-NEXT: #1 bar1{{.*}} {{.*}}simple_stack.c:14{{(:3)?}} ({{.*}})
// CHECK-NEXT: #2 Thread1{{.*}} {{.*}}simple_stack.c:28{{(:3)?}} ({{.*}})
// CHECK: Previous read of size 4 at {{.*}} by thread T2:
// CHECK-NEXT: #0 foo2{{.*}} {{.*}}simple_stack.c:18{{(:26)?}} ({{.*}})
// CHECK-NEXT: #1 bar2{{.*}} {{.*}}simple_stack.c:23{{(:3)?}} ({{.*}})
// CHECK-NEXT: #2 Thread2{{.*}} {{.*}}simple_stack.c:33{{(:3)?}} ({{.*}})
// CHECK: Thread T1 (tid={{.*}}, running) created by main thread at:
// CHECK-NEXT: #0 pthread_create {{.*}} ({{.*}})
// CHECK-NEXT: #1 StartThread{{.*}} {{.*}}simple_stack.c:38{{(:3)?}} ({{.*}})
// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack.c:43{{(:3)?}} ({{.*}})
// CHECK: Thread T2 ({{.*}}) created by main thread at:
// CHECK-NEXT: #0 pthread_create {{.*}} ({{.*}})
// CHECK-NEXT: #1 StartThread{{.*}} {{.*}}simple_stack.c:38{{(:3)?}} ({{.*}})
// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack.c:44{{(:3)?}} ({{.*}})