ce3721057d
This is intended to address the following problem. Episodically we see CHECK-failures when recursive interceptors call back into user code. Effectively we are not "in_rtl" at this point, but it's very complicated and fragile to properly maintain in_rtl property. Instead get rid of it. It was used mostly for sanity CHECKs, which basically never uncover real problems. Instead introduce ignore_interceptors flag, which is used in very few narrow places to disable recursive interceptors (e.g. during runtime initialization). llvm-svn: 197979
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
//===-- tsan_stack_test.cc ------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "tsan_sync.h"
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#include "tsan_rtl.h"
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#include "gtest/gtest.h"
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#include <string.h>
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namespace __tsan {
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static void TestStackTrace(StackTrace *trace) {
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ThreadState thr(0, 0, 0, 0, 0, 0, 0, 0);
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uptr stack[128];
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thr.shadow_stack = &stack[0];
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thr.shadow_stack_pos = &stack[0];
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thr.shadow_stack_end = &stack[128];
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trace->ObtainCurrent(&thr, 0);
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EXPECT_EQ(trace->Size(), (uptr)0);
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trace->ObtainCurrent(&thr, 42);
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EXPECT_EQ(trace->Size(), (uptr)1);
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EXPECT_EQ(trace->Get(0), (uptr)42);
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*thr.shadow_stack_pos++ = 100;
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*thr.shadow_stack_pos++ = 101;
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trace->ObtainCurrent(&thr, 0);
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EXPECT_EQ(trace->Size(), (uptr)2);
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EXPECT_EQ(trace->Get(0), (uptr)100);
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EXPECT_EQ(trace->Get(1), (uptr)101);
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trace->ObtainCurrent(&thr, 42);
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EXPECT_EQ(trace->Size(), (uptr)3);
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EXPECT_EQ(trace->Get(0), (uptr)100);
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EXPECT_EQ(trace->Get(1), (uptr)101);
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EXPECT_EQ(trace->Get(2), (uptr)42);
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}
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TEST(StackTrace, Basic) {
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StackTrace trace;
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TestStackTrace(&trace);
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}
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TEST(StackTrace, StaticBasic) {
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uptr buf[10];
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StackTrace trace1(buf, 10);
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TestStackTrace(&trace1);
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StackTrace trace2(buf, 3);
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TestStackTrace(&trace2);
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}
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TEST(StackTrace, StaticTrim) {
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uptr buf[2];
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StackTrace trace(buf, 2);
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ThreadState thr(0, 0, 0, 0, 0, 0, 0, 0);
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uptr stack[128];
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thr.shadow_stack = &stack[0];
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thr.shadow_stack_pos = &stack[0];
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thr.shadow_stack_end = &stack[128];
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*thr.shadow_stack_pos++ = 100;
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*thr.shadow_stack_pos++ = 101;
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*thr.shadow_stack_pos++ = 102;
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trace.ObtainCurrent(&thr, 0);
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EXPECT_EQ(trace.Size(), (uptr)2);
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EXPECT_EQ(trace.Get(0), (uptr)101);
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EXPECT_EQ(trace.Get(1), (uptr)102);
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trace.ObtainCurrent(&thr, 42);
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EXPECT_EQ(trace.Size(), (uptr)2);
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EXPECT_EQ(trace.Get(0), (uptr)102);
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EXPECT_EQ(trace.Get(1), (uptr)42);
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}
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} // namespace __tsan
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