| 1 | // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 2 | |
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| 3 | // UNSUPPORTED: ios |
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| 4 | |
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| 5 | #include <stdint.h> |
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| 6 | #include <stdio.h> |
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| 7 | #include <errno.h> |
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| 8 | #include <sys/mman.h> |
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| 9 | |
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| 10 | #if defined(__FreeBSD__) |
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| 11 | // The MAP_NORESERVE define has been removed in FreeBSD 11.x, and even before |
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| 12 | // that, it was never implemented. So just define it to zero. |
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| 13 | #undef MAP_NORESERVE |
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| 14 | #define MAP_NORESERVE 0 |
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| 15 | #endif |
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| 16 | |
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| 17 | int main() { |
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| 18 | #ifdef __x86_64__ |
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| 19 | const size_t kLog2Size = 39; |
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| 20 | #elif defined(__mips64) || defined(__aarch64__) || \ |
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| 21 | defined(__loongarch_lp64) || (defined(__riscv) && __riscv_xlen == 64) |
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| 22 | const size_t kLog2Size = 32; |
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| 23 | #elif defined(__powerpc64__) |
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| 24 | const size_t kLog2Size = 39; |
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| 25 | #elif defined(__s390x__) |
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| 26 | const size_t kLog2Size = 43; |
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| 27 | #endif |
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| 28 | const uintptr_t kLocation = 0x40ULL << kLog2Size; |
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| 29 | void *p = mmap( |
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| 30 | addr: reinterpret_cast<void*>(kLocation), |
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| 31 | len: 1ULL << kLog2Size, |
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| 32 | PROT_READ|PROT_WRITE, |
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| 33 | MAP_PRIVATE|MAP_ANON|MAP_NORESERVE, |
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| 34 | fd: -1, offset: 0); |
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| 35 | fprintf(stderr, format: "DONE %p %d\n" , p, errno); |
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| 36 | return p == MAP_FAILED; |
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| 37 | } |
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| 38 | |
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| 39 | // CHECK: DONE |
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| 40 | |
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