diff options
Diffstat (limited to 'compiler-rt/lib/msan/lit_tests/dtls_test.c')
-rw-r--r-- | compiler-rt/lib/msan/lit_tests/dtls_test.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/compiler-rt/lib/msan/lit_tests/dtls_test.c b/compiler-rt/lib/msan/lit_tests/dtls_test.c deleted file mode 100644 index c88e50f1df0..00000000000 --- a/compiler-rt/lib/msan/lit_tests/dtls_test.c +++ /dev/null @@ -1,60 +0,0 @@ -/* RUN: %clang_msan -m64 %s -o %t - RUN: %clang_msan -m64 %s -DBUILD_SO -fPIC -o %t-so.so -shared - RUN: not %t 2>&1 | FileCheck %s - CHECK: MemorySanitizer: use-of-uninitialized-value - - This is an actual bug in msan/glibc integration, - see https://sourceware.org/bugzilla/show_bug.cgi?id=16291 -*/ - -#ifndef BUILD_SO -#include <assert.h> -#include <dlfcn.h> -#include <stdio.h> -#include <stdlib.h> -#include <pthread.h> - -typedef long *(* get_t)(); -get_t GetTls; -void *Thread1(void *unused) { - long uninitialized; - long *x = GetTls(); - if (*x) - fprintf(stderr, "bar\n"); - *x = uninitialized; - fprintf(stderr, "stack: %p dtls: %p\n", &x, x); - return 0; -} - -void *Thread2(void *unused) { - long *x = GetTls(); - fprintf(stderr, "stack: %p dtls: %p\n", &x, x); - if (*x) - fprintf(stderr, "foo\n"); // False negative here. - return 0; -} - -int main(int argc, char *argv[]) { - char path[4096]; - snprintf(path, sizeof(path), "%s-so.so", argv[0]); - int i; - - void *handle = dlopen(path, RTLD_LAZY); - if (!handle) fprintf(stderr, "%s\n", dlerror()); - assert(handle != 0); - GetTls = (get_t)dlsym(handle, "GetTls"); - assert(dlerror() == 0); - - pthread_t t; - pthread_create(&t, 0, Thread1, 0); - pthread_join(t, 0); - pthread_create(&t, 0, Thread2, 0); - pthread_join(t, 0); - return 0; -} -#else // BUILD_SO -__thread long huge_thread_local_array[1 << 17]; -long *GetTls() { - return &huge_thread_local_array[0]; -} -#endif |