derek.holloway
7502bf64a4
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86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
#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; (void)tmp;
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foo1();
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}
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void __attribute__((noinline)) foo2() {
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volatile int v = Global; (void)v;
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}
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void __attribute__((noinline)) bar2() {
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volatile int tmp = 42; (void)tmp;
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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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void *Thread2(void *x) {
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bar2();
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barrier_wait(&barrier);
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return NULL;
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}
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void __attribute__((noinline)) StartThread(pthread_t *t, void *(*f)(void*)) {
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pthread_create(t, NULL, f, 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[2];
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StartThread(&t[0], Thread1);
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StartThread(&t[1], Thread2);
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pthread_join(t[0], NULL);
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pthread_join(t[1], NULL);
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return 0;
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}
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// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
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// Also check that functions instrumentation can be configured by either driver
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// or legacy flags:
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// RUN: %clangxx_tsan -O1 %s -o %t -fno-sanitize-thread-func-entry-exit && %deflake %run %t 2>&1 \
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// RUN: | FileCheck --check-prefix=CHECK-FUNC-ENTRY-EXIT-OFF %s
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// RUN: %clangxx_tsan -O1 %s -o %t -mllvm -tsan-instrument-func-entry-exit=0 && %deflake %run %t 2>&1 \
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// RUN: | FileCheck --check-prefix=CHECK-FUNC-ENTRY-EXIT-OFF %s
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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_stack.c:6{{(:10)?}} ({{.*}})
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// CHECK-NEXT: #1 bar1{{.*}} {{.*}}simple_stack.c:11{{(:3)?}} ({{.*}})
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// CHECK-NEXT: #2 Thread1{{.*}} {{.*}}simple_stack.c:25{{(:3)?}} ({{.*}})
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// CHECK: Previous read of size 4 at {{.*}} by thread T2:
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// CHECK-NEXT: #0 foo2{{.*}} {{.*}}simple_stack.c:15{{(:20)?}} ({{.*}})
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// CHECK-NEXT: #1 bar2{{.*}} {{.*}}simple_stack.c:20{{(:3)?}} ({{.*}})
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// CHECK-NEXT: #2 Thread2{{.*}} {{.*}}simple_stack.c:30{{(:3)?}} ({{.*}})
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// CHECK: Thread T1 (tid={{.*}}, running) created by main thread at:
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// CHECK-NEXT: #0 pthread_create {{.*}} ({{.*}})
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// CHECK-NEXT: #1 StartThread{{.*}} {{.*}}simple_stack.c:36{{(:3)?}} ({{.*}})
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// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack.c:42{{(:3)?}} ({{.*}})
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// CHECK: Thread T2 ({{.*}}) created by main thread at:
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// CHECK-NEXT: #0 pthread_create {{.*}} ({{.*}})
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// CHECK-NEXT: #1 StartThread{{.*}} {{.*}}simple_stack.c:36{{(:3)?}} ({{.*}})
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// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack.c:43{{(:3)?}} ({{.*}})
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// CHECK-FUNC-ENTRY-EXIT-OFF: WARNING: ThreadSanitizer: data race
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// CHECK-FUNC-ENTRY-EXIT-OFF-NEXT: Write of size 4 at {{.*}} by thread T1:
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// CHECK-FUNC-ENTRY-EXIT-OFF-NEXT: #0 foo1{{.*}} {{.*}}simple_stack.c:6{{(:10)?}} ({{.*}})
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// CHECK-FUNC-ENTRY-EXIT-OFF: Previous read of size 4 at {{.*}} by thread T2:
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// CHECK-FUNC-ENTRY-EXIT-OFF-NEXT: #0 foo2{{.*}} {{.*}}simple_stack.c:15{{(:20)?}} ({{.*}})
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// CHECK-FUNC-ENTRY-EXIT-OFF: Thread T1 (tid={{.*}}, running) created by main thread at:
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// CHECK-FUNC-ENTRY-EXIT-OFF-NEXT: #0 pthread_create {{.*}} ({{.*}})
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// CHECK-FUNC-ENTRY-EXIT-OFF: Thread T2 ({{.*}}) created by main thread at:
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// CHECK-FUNC-ENTRY-EXIT-OFF-NEXT: #0 pthread_create {{.*}} ({{.*}})
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