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
54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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int Global;
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void __attribute__((noinline)) foo1() {
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Global = 42;
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}
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void __attribute__((noinline)) bar1() {
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volatile int tmp = 42;
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int tmp2 = tmp;
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(void)tmp2;
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foo1();
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}
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void __attribute__((noinline)) foo2() {
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volatile int tmp = Global;
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int tmp2 = tmp;
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(void)tmp2;
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}
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void __attribute__((noinline)) bar2() {
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volatile int tmp = 42;
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int tmp2 = tmp;
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(void)tmp2;
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foo2();
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}
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void *Thread1(void *x) {
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barrier_wait(&barrier);
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bar1();
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return NULL;
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}
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int main() {
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barrier_init(&barrier, 2);
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pthread_t t;
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pthread_create(&t, NULL, Thread1, NULL);
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bar2();
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barrier_wait(&barrier);
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pthread_join(t, NULL);
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK-NEXT: Write of size 4 at {{.*}} by thread T1:
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// CHECK-NEXT: #0 foo1{{.*}} {{.*}}simple_stack2.cc:[[@LINE-40]]{{(:10)?}} ({{.*}})
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// CHECK-NEXT: #1 bar1{{.*}} {{.*}}simple_stack2.cc:[[@LINE-34]]{{(:3)?}} ({{.*}})
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// CHECK-NEXT: #2 Thread1{{.*}} {{.*}}simple_stack2.cc:[[@LINE-17]]{{(:3)?}} ({{.*}})
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// CHECK: Previous read of size 4 at {{.*}} by main thread:
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// CHECK-NEXT: #0 foo2{{.*}} {{.*}}simple_stack2.cc:[[@LINE-33]]{{(:22)?}} ({{.*}})
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// CHECK-NEXT: #1 bar2{{.*}} {{.*}}simple_stack2.cc:[[@LINE-25]]{{(:3)?}} ({{.*}})
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// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack2.cc:[[@LINE-13]]{{(:3)?}} ({{.*}})
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