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// RUN: %clangxx_tsan -O1 %s -o %t
// RUN: %deflake %run %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
extern "C" {
void __tsan_on_report(void *report);
int __tsan_get_report_loc(void *report, unsigned long idx, const char **type,
void **addr, void **start,
unsigned long *size, int *tid, int *fd,
int *suppressable, void **trace,
unsigned long trace_size);
int __tsan_get_report_loc_object_type(void *report, unsigned long idx,
const char **object_type);
void *__tsan_external_register_tag(const char *object_type);
void __tsan_external_assign_tag(void *addr, void *tag);
}
void *Thread(void *arg) {
*((long *)arg) = 42;
return NULL;
}
int main() {
void *tag = __tsan_external_register_tag("MyObject");
long *obj = (long *)malloc(sizeof(long));
fprintf(stderr, "obj = %p\n", obj);
// CHECK: obj = [[ADDR:0x[0-9a-f]+]]
__tsan_external_assign_tag(obj, tag);
pthread_t t;
pthread_create(&t, 0, Thread, obj);
*obj = 41;
pthread_join(t, 0);
fprintf(stderr, "Done.\n");
return 0;
}
void __tsan_on_report(void *report) {
const char *type;
void *addr;
void *start;
unsigned long size;
int tid, fd, suppressable;
void *trace[16] = {0};
__tsan_get_report_loc(report, 0, &type, &addr, &start, &size, &tid, &fd,
&suppressable, trace, 16);
fprintf(stderr, "type = %s, start = %p, size = %ld\n", type, start, size);
// CHECK: type = heap, start = [[ADDR]], size = 8
const char *object_type;
__tsan_get_report_loc_object_type(report, 0, &object_type);
fprintf(stderr, "object_type = %s\n", object_type);
// CHECK: object_type = MyObject
}
// CHECK: Done.
// CHECK: ThreadSanitizer: reported 1 warnings
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