6a9c719ee1
Summary: Original patch by Kuba Mracek The %T lit expansion expands to a common directory shared between all the tests in the same directory, which is unexpected and unintuitive, and more importantly, it's been a source of subtle race conditions and flaky tests. In https://reviews.llvm.org/D35396, it was agreed that it would be best to simply ban %T and only keep %t, which is unique to each test. When a test needs a temporary directory, it can just create one using mkdir %t. This patch removes %T in compiler-rt. Differential Revision: https://reviews.llvm.org/D48618 llvm-svn: 336661
29 lines
1.2 KiB
C++
29 lines
1.2 KiB
C++
// Test various levels of coverage
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//
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// RUN: %clangxx_msan -DINIT_VAR=1 -O1 -fsanitize-coverage=func %s -o %t
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// RUN: mkdir -p %t-dir
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// 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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// RUN: %clangxx_msan -O1 -fsanitize-coverage=func %s -o %t
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// 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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// RUN: %clangxx_msan -O1 -fsanitize-coverage=bb %s -o %t
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// 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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// RUN: %clangxx_msan -O1 -fsanitize-coverage=edge %s -o %t
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// 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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volatile int sink;
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int main(int argc, char **argv) {
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int var;
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#if INIT_VAR
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var = 0;
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#endif
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if (argc == 0)
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sink = 0;
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return *(volatile int*)&var;
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}
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// CHECK_WARN: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK_NOWARN-NOT: ERROR
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// CHECK1: 1 PCs written
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// CHECK2: 1 PCs written
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// CHECK3: 2 PCs written
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