[clang-tools-extra] r256562 - [clang-tidy] Fix a use-after-free bug found by asan

[Kostya Serebryany via cfe-commits]

Nice!
is a fuzzer for clang-tidy possible/desirable?
similar to what we have for clang and clang-format
(tools/clang-format/fuzzer, ./tools/clang-fuzzer)


On Tue, Dec 29, 2015 at 8:14 AM, Alexander Kornienko via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> Author: alexfh
> Date: Tue Dec 29 10:14:38 2015
> New Revision: 256562
>
> URL: http://llvm.org/viewvc/llvm-project?rev=256562&view=rev
> Log:
> [clang-tidy] Fix a use-after-free bug found by asan
>
> Modified:
>
> clang-tools-extra/trunk/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
>
> Modified:
> clang-tools-extra/trunk/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/readability/SimplifyBooleanExprCheck.cpp?rev=256562&r1=256561&r2=256562&view=diff
>
> ==============================================================================
> ---
> clang-tools-extra/trunk/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
> (original)
> +++
> clang-tools-extra/trunk/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
> Tue Dec 29 10:14:38 2015
> @@ -491,9 +491,10 @@ void SimplifyBooleanExprCheck::check(con
>  bool containsDiscardedTokens(
>      const ast_matchers::MatchFinder::MatchResult &Result,
>      CharSourceRange CharRange) {
> -  StringRef ReplacementText =
> +  std::string ReplacementText =
>        Lexer::getSourceText(CharRange, *Result.SourceManager,
> -                           Result.Context->getLangOpts()).str();
> +                           Result.Context->getLangOpts())
> +          .str();
>    Lexer Lex(CharRange.getBegin(), Result.Context->getLangOpts(),
>              ReplacementText.data(), ReplacementText.data(),
>              ReplacementText.data() + ReplacementText.size());
>
>
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