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
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
// RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s -o %t
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// RUN: rm -rf %t-dir
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// RUN: mkdir -p %t-dir && cd %t-dir
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// RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t 2>&1 | FileCheck %s
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//
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// UNSUPPORTED: android
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//
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// Ideally a forked-subprocess should only report it's own coverage,
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// not parent's one. But trace-pc-guard currently does nothing special for fork,
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// and thus this test is relaxed.
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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__attribute__((noinline))
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void foo() { printf("foo\n"); }
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__attribute__((noinline))
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void bar() { printf("bar\n"); }
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__attribute__((noinline))
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void baz() { printf("baz\n"); }
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int main(int argc, char **argv) {
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pid_t child_pid = fork();
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if (child_pid == 0) {
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fprintf(stderr, "Child PID: %d\n", getpid());
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baz();
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} else {
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fprintf(stderr, "Parent PID: %d\n", getpid());
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foo();
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bar();
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}
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return 0;
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}
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// CHECK-DAG: Child PID: [[ChildPID:[0-9]+]]
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// CHECK-DAG: [[ChildPID]].sancov: {{.*}} PCs written
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// CHECK-DAG: Parent PID: [[ParentPID:[0-9]+]]
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// CHECK-DAG: [[ParentPID]].sancov: 3 PCs written
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