[LLVMbugs] [Bug 16266] New: Several clang-check tests crash with double-free when built with expensive checks

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16266

            Bug ID: 16266
           Summary: Several clang-check tests crash with double-free when
                    built with expensive checks
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

LLVM configured with --enable-optimized --enable-assertions
--enable-expensive-checks --enable-debug-symbols

These tests fail:

    Clang :: Tooling/auto-detect-from-source-parent-of-cwd.cpp
    Clang :: Tooling/auto-detect-from-source-parent.cpp
    Clang :: Tooling/clang-check-autodetect-dir.cpp

Example failure:

*** Error in `clang-check': double free or corruption (out): 0x0000000001a57dc0
***                                                     
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x80a46)[0x7f727c739a46]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSt15basic_stringbufIcSt11char_traitsIcESaIcEE8overflowEi+0x149)[0x7f727d0362a9]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSt15basic_streambufIcSt11char_traitsIcEE6xsputnEPKcl+0x36)[0x7f727d03a976]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l+0x194)[0x7f727d031984]
clang-check[0x688146]
clang-check[0x6886eb]
clang-check[0x689332]
clang-check[0x687a70]
clang-check[0x4888b2]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f727c6daea5]
clang-check[0x489e4d]

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