60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
// RUN: %clang -g %s -o %t
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// RUN: %clang -g %s -DBUILD_SO -fPIC -o %t-so.so -shared
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// RUN: %run %t 2>&1 | FileCheck %s
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// REQUIRES: glibc
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// `__tls_get_addr` is somehow not invoked.
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// XFAIL: i386-linux
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// These don't intercept __tls_get_addr.
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// XFAIL: lsan,hwasan,ubsan
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// FIXME: Fails for unknown reasons.
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// UNSUPPORTED: powerpc64le-target-arch
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// Fails because AArch64 uses TLSDESC instead of __tls_get_addr.
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// UNSUPPORTED: aarch64-target-arch
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#ifndef BUILD_SO
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# include <assert.h>
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# include <dlfcn.h>
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# include <pthread.h>
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# include <stdio.h>
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# include <stdlib.h>
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// CHECK-COUNT-2: __sanitizer_get_dtls_size:
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size_t __sanitizer_get_dtls_size(const void *ptr)
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__attribute__((disable_sanitizer_instrumentation)) {
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fprintf(stderr, "__sanitizer_get_dtls_size: %p\n", ptr);
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return 0;
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}
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typedef long *(*get_t)();
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get_t GetTls;
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void *Thread(void *unused) { return GetTls(); }
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int main(int argc, char *argv[]) {
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char path[4096];
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snprintf(path, sizeof(path), "%s-so.so", argv[0]);
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int i;
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void *handle = dlopen(path, RTLD_LAZY);
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if (!handle)
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fprintf(stderr, "%s\n", dlerror());
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assert(handle != 0);
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GetTls = (get_t)dlsym(handle, "GetTls");
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assert(dlerror() == 0);
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pthread_t t;
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pthread_create(&t, 0, Thread, 0);
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pthread_join(t, 0);
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pthread_create(&t, 0, Thread, 0);
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pthread_join(t, 0);
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return 0;
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}
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#else // BUILD_SO
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__thread long huge_thread_local_array[1 << 17];
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long *GetTls() { return &huge_thread_local_array[0]; }
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#endif
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