forked from OSchip/llvm-project
61 lines
2.7 KiB
C
61 lines
2.7 KiB
C
// RUN: %clang_hwasan %s -o %t
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// RUN: not %run %t 40 2>&1 | FileCheck %s --check-prefix=CHECK40-LEFT
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// RUN: %env_hwasan_opts=malloc_align_right=2 not %run %t 40 2>&1 | FileCheck %s --check-prefix=CHECK40-RIGHT
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// RUN: not %run %t 80 2>&1 | FileCheck %s --check-prefix=CHECK80-LEFT
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// RUN: %env_hwasan_opts=malloc_align_right=2 not %run %t 80 2>&1 | FileCheck %s --check-prefix=CHECK80-RIGHT
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// RUN: not %run %t -30 2>&1 | FileCheck %s --check-prefix=CHECKm30
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// RUN: not %run %t -30 1000000 2>&1 | FileCheck %s --check-prefix=CHECKMm30
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// RUN: not %run %t 1000000 1000000 2>&1 | FileCheck %s --check-prefix=CHECKM
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// Test OOB within the granule.
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// Misses the bug when malloc is left-aligned, catches it otherwise.
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// RUN: %run %t 31
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// RUN: %env_hwasan_opts=malloc_align_right=2 not %run %t 31 2>&1 | FileCheck %s --check-prefix=CHECK31
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// RUN: %run %t 30 20
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// RUN: %env_hwasan_opts=malloc_align_right=9 not %run %t 30 20 2>&1 | FileCheck %s --check-prefix=CHECK20-RIGHT8
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// RUN: %env_hwasan_opts=malloc_align_right=42 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-WRONG-FLAG
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// REQUIRES: stable-runtime
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#include <stdlib.h>
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#include <stdio.h>
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#include <sanitizer/hwasan_interface.h>
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static volatile char sink;
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int main(int argc, char **argv) {
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__hwasan_enable_allocator_tagging();
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int offset = argc < 2 ? 40 : atoi(argv[1]);
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int size = argc < 3 ? 30 : atoi(argv[2]);
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char * volatile x = (char*)malloc(size);
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fprintf(stderr, "base: %p access: %p\n", x, &x[offset]);
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sink = x[offset];
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// CHECK40-LEFT: allocated heap chunk; size: 32 offset: 8
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// CHECK40-LEFT: is located 10 bytes to the right of 30-byte region
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// CHECK40-RIGHT: allocated heap chunk; size: 32 offset:
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// CHECK40-RIGHT: is located 10 bytes to the right of 30-byte region
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//
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// CHECK80-LEFT: allocated heap chunk; size: 32 offset: 16
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// CHECK80-LEFT: is located 50 bytes to the right of 30-byte region
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// CHECK80-RIGHT: allocated heap chunk; size: 32 offset:
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// CHECK80-RIGHT: is located 50 bytes to the right of 30-byte region
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//
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// CHECKm30: is located 30 bytes to the left of 30-byte region
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//
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// CHECKMm30: is a large allocated heap chunk; size: 1003520 offset: -30
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// CHECKMm30: is located 30 bytes to the left of 1000000-byte region
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//
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// CHECKM: is a large allocated heap chunk; size: 1003520 offset: 1000000
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// CHECKM: is located 0 bytes to the right of 1000000-byte region
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//
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// CHECK31: is located 1 bytes to the right of 30-byte region
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//
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// CHECK20-RIGHT8: is located 10 bytes to the right of 20-byte region [0x{{.*}}8,0x{{.*}}c)
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//
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// CHECK-WRONG-FLAG: ERROR: unsupported value of malloc_align_right flag: 42
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free(x);
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}
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