| 1 | // Test various levels of coverage |
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| 2 | // |
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| 3 | // RUN: %clangxx_msan -DINIT_VAR=1 -O1 -fsanitize-coverage=func,trace-pc-guard %s -o %t |
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| 4 | // RUN: mkdir -p %t-dir |
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| 5 | // RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%t-dir %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN |
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| 6 | // RUN: %clangxx_msan -O1 -fsanitize-coverage=func,trace-pc-guard %s -o %t |
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| 7 | // RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%t-dir not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN |
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| 8 | // RUN: %clangxx_msan -O1 -fsanitize-coverage=bb,trace-pc-guard %s -o %t |
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| 9 | // RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%t-dir not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2 --check-prefix=CHECK_WARN |
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| 10 | // RUN: %clangxx_msan -O1 -fsanitize-coverage=edge,trace-pc-guard %s -o %t |
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| 11 | // RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%t-dir not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3 --check-prefix=CHECK_WARN |
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| 12 | |
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| 13 | volatile int sink; |
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| 14 | int main(int argc, char **argv) { |
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| 15 | int var; |
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| 16 | #if INIT_VAR |
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| 17 | var = 0; |
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| 18 | #endif |
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| 19 | if (argc == 0) |
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| 20 | sink = 0; |
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| 21 | return *(volatile int*)&var; |
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| 22 | } |
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| 23 | |
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| 24 | // CHECK_WARN: WARNING: MemorySanitizer: use-of-uninitialized-value |
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| 25 | // CHECK_NOWARN-NOT: ERROR |
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| 26 | // CHECK1: 1 PCs written |
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| 27 | // CHECK2: 1 PCs written |
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| 28 | // CHECK3: 2 PCs written |
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| 29 | |
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