29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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#include "java.h"
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#include <errno.h>
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#include <sys/mman.h>
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int main() {
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// Test that munmap interceptor resets meta shadow for the memory range.
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// Previously __tsan_java_move failed because it encountered non-zero meta
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// shadow for the destination.
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int const kHeapSize = 1024 * 1024;
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jptr jheap = (jptr)mmap(0, kHeapSize, PROT_READ | PROT_WRITE,
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MAP_ANON | MAP_PRIVATE, -1, 0);
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if (jheap == (jptr)MAP_FAILED)
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return printf("mmap failed with %d\n", errno);
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__atomic_store_n((int*)jheap, 1, __ATOMIC_RELEASE);
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munmap((void*)jheap, kHeapSize);
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jheap = (jptr)mmap((void*)jheap, kHeapSize, PROT_READ | PROT_WRITE,
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MAP_ANON | MAP_PRIVATE, -1, 0);
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if (jheap == (jptr)MAP_FAILED)
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return printf("second mmap failed with %d\n", errno);
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__tsan_java_init(jheap, kHeapSize);
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__tsan_java_move(jheap + 16, jheap, 16);
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fprintf(stderr, "DONE\n");
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return __tsan_java_fini();
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}
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// CHECK-NOT: WARNING: ThreadSanitizer: data race
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// CHECK: DONE
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