[llvm-bugs] [Bug 24787] New: __tsan::invoke_malloc_hook(void*, unsigned long) is miscompiled

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=24787

            Bug ID: 24787
           Summary: __tsan::invoke_malloc_hook(void*, unsigned long) is
                    miscompiled
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: hjl.tools at gmail.com
                CC: james.molloy at arm.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

On Fedora 22/x86-64, llvm r247264:

commit 037cfdbe31069696574cfaac906f7bc59b5ac5bc
Author: James Molloy <james.molloy at arm.com>
Date:   Thu Sep 10 10:22:20 2015 +0000

    Enable GlobalsAA by default

    This can give significant improvements to alias analysis in some
situations, and improves its testing coverage in all situations.

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247264
91177308-0d34-0410-b5e6-96231b3b80d8

miscompiled __tsan::invoke_malloc_hook(void*, unsigned long) in
projects/compiler-rt/lib/tsan/rtl/tsan_mman.cc with clang r247438 +
llvm r247435 compiled with clang r247438 + llvm r247435.

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