| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 2 | |
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| 3 | #include "java.h" |
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| 4 | #include <errno.h> |
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| 5 | #include <sys/mman.h> |
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| 6 | |
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| 7 | int main() { |
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| 8 | // Test a non-regular kHeapSize |
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| 9 | // Previously __tsan_java_init failed because it encountered non-zero meta |
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| 10 | // shadow for the destination. |
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| 11 | size_t const kPageSize = sysconf(_SC_PAGESIZE); |
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| 12 | int const kSize = kPageSize - 1; |
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| 13 | jptr jheap2 = (jptr)mmap(addr: 0, len: kSize, PROT_READ | PROT_WRITE, |
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| 14 | MAP_ANON | MAP_PRIVATE, fd: -1, offset: 0); |
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| 15 | if (jheap2 == (jptr)MAP_FAILED) |
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| 16 | return printf(format: "mmap failed with %d\n" , errno); |
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| 17 | __atomic_store_n((int *)(jheap2 + kSize - 3), 1, __ATOMIC_RELEASE); |
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| 18 | // Due to the previous incorrect meta-end calculation, the following munmap |
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| 19 | // did not clear the tail meta shadow. |
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| 20 | munmap(addr: (void *)jheap2, len: kSize); |
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| 21 | int const kHeapSize2 = kSize + 1; |
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| 22 | jheap2 = (jptr)mmap(addr: (void *)jheap2, len: kHeapSize2, PROT_READ | PROT_WRITE, |
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| 23 | MAP_ANON | MAP_PRIVATE, fd: -1, offset: 0); |
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| 24 | if (jheap2 == (jptr)MAP_FAILED) |
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| 25 | return printf(format: "second mmap failed with %d\n" , errno); |
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| 26 | __tsan_java_init(heap_begin: jheap2, heap_size: kHeapSize2); |
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| 27 | __tsan_java_move(src: jheap2, dst: jheap2 + kHeapSize2 - 8, size: 8); |
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| 28 | fprintf(stderr, format: "DONE\n" ); |
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| 29 | return __tsan_java_fini(); |
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| 30 | } |
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| 31 | |
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| 32 | // CHECK-NOT: WARNING: ThreadSanitizer: data race |
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| 33 | // CHECK: DONE |
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| 34 | |
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