[llvm-bugs] [Bug 38735] New: Static analyzer crashes on GTest's EXPECT_THAT

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38735

            Bug ID: 38735
           Summary: Static analyzer crashes on GTest's EXPECT_THAT
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Static Analyzer
          Assignee: dcoughlin at apple.com
          Reporter: ibiryukov at google.com
                CC: ekarpenkov at apple.com, llvm-bugs at lists.llvm.org

Can be reproduced on existing unittest that uses EXPECT_THAT, e.g.:
./bin/clang-tidy --checks='-*,clang-analyzer*'
$LLVM_SOURCE_DIR/tools/clang/tools/extra/unittests/clangd/ClangdTests.cpp

A minimal example that also crashes it:

#include "gmock/gmock.h"
#include "gtest/gtest.h"

TEST(Foo, Bar) {
  EXPECT_THAT("Foo", ::testing::HasSubstr("oo"));
}


Crash stacktrace:
#0  getBaseRegion () at
../tools/clang/lib/StaticAnalyzer/Core/MemRegion.cpp:1129
#1  0x0000000001bc6ff6 in isLiveRegion () at
../tools/clang/lib/StaticAnalyzer/Core/SymbolManager.cpp:435
#2  0x00000000019c9d43 in checkDeadSymbols ()
    at ../tools/clang/lib/StaticAnalyzer/Checkers/InnerPointerChecker.cpp:252
#3  _checkDeadSymbols<(anonymous namespace)::InnerPointerChecker> ()
    at ../tools/clang/include/clang/StaticAnalyzer/Core/Checker.h:321
#4  0x0000000001b23cb5 in operator() ()
    at ../tools/clang/include/clang/StaticAnalyzer/Core/CheckerManager.h:70
#5  runChecker () at
../tools/clang/lib/StaticAnalyzer/Core/CheckerManager.cpp:568
#6  expandGraphWithCheckers<(anonymous namespace)::CheckDeadSymbolsContext> ()
    at ../tools/clang/lib/StaticAnalyzer/Core/CheckerManager.cpp:129
#7  runCheckersForDeadSymbols () at
../tools/clang/lib/StaticAnalyzer/Core/CheckerManager.cpp:582
#8  0x0000000001b3adad in removeDead () at
../tools/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp:680
#9  0x0000000001b3907c in ProcessStmt () at
../tools/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp:722
#10 0x0000000001b38e0c in processCFGElement ()
    at ../tools/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp:570
#11 0x0000000001b2d7c1 in HandlePostStmt () at
../tools/clang/lib/StaticAnalyzer/Core/CoreEngine.cpp:437
#12 0x0000000001b2ca7b in ExecuteWorkList () at
../tools/clang/lib/StaticAnalyzer/Core/CoreEngine.cpp:147
#13 0x00000000018f5222 in ExecuteWorkList ()
    at
../tools/clang/include/clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h:168
#14 ActionExprEngine () at
../tools/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp:754
#15 0x00000000018f4da3 in HandleCode ()
    at ../tools/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp:783
#16 0x00000000018ec80f in HandleDeclsCallGraph ()
    at ../tools/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp:512
#17 runAnalysisOnTranslationUnit ()
    at ../tools/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp:559
#18 HandleTranslationUnit () at
../tools/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp:590
#19 0x0000000001d1891c in HandleTranslationUnit ()
    at ../tools/clang/lib/Frontend/MultiplexConsumer.cpp:287
#20 0x0000000001e4acf5 in ParseAST () at
../tools/clang/lib/Parse/ParseAST.cpp:170
#21 0x0000000001cff2e0 in Execute () at
../tools/clang/lib/Frontend/FrontendAction.cpp:910
#22 0x0000000001ca4ee1 in ExecuteAction () at
../tools/clang/lib/Frontend/CompilerInstance.cpp:961
#23 0x00000000017d3816 in runInvocation () at
../tools/clang/lib/Tooling/Tooling.cpp:362
#24 0x00000000011c1b15 in runInvocation () at
../tools/clang/tools/extra/clang-tidy/ClangTidy.cpp:556
#25 0x00000000017d3586 in runInvocation () at
../tools/clang/lib/Tooling/Tooling.cpp:337
#26 0x00000000017d2fcc in run () at ../tools/clang/lib/Tooling/Tooling.cpp:322
#27 0x00000000017d45f1 in run () at ../tools/clang/lib/Tooling/Tooling.cpp:496
#28 0x00000000011be885 in runClangTidy () at
../tools/clang/tools/extra/clang-tidy/ClangTidy.cpp:577
#29 0x0000000000f561c0 in clangTidyMain ()
    at ../tools/clang/tools/extra/clang-tidy/tool/ClangTidyMain.cpp:424
#30 main () at ../tools/clang/tools/extra/clang-tidy/tool/ClangTidyMain.cpp:576

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