[llvm-bugs] [Bug 25283] New: Executable crashes when linked with lld & -O2

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=25283

            Bug ID: 25283
           Summary: Executable crashes when linked with lld & -O2
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: ismail at i10z.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 15141
  --> https://llvm.org/bugs/attachment.cgi?id=15141&action=edit
Testcase

This is on Linux x86_64:

λ clang -v
clang version 3.8.0 (trunk 250995)
Target: x86_64-suse-linux
Thread model: posix
InstalledDir: /opt/clang/bin
Found candidate GCC installation: /usr/lib64/gcc/x86_64-suse-linux/5
Selected GCC installation: /usr/lib64/gcc/x86_64-suse-linux/5
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64


λ clang++ -x c++ -O2 -std=c++11 -fuse-ld=lld2 mandelbrot-mp.ii
λ ./a.out
[1]    30266 segmentation fault (core dumped)  ./a.out

Works fine if I use -O1 or gold linker. Testcase attached.

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