[llvm-bugs] [Bug 32303] New: llvm-tblgen crashes when compiling llvm 4.0 with gcc 6.2.1

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=32303

            Bug ID: 32303
           Summary: llvm-tblgen crashes when compiling llvm 4.0 with gcc
                    6.2.1
           Product: new-bugs
           Version: 4.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: blastrock at free.fr
                CC: llvm-bugs at lists.llvm.org

Created attachment 18105
  --> https://bugs.llvm.org/attachment.cgi?id=18105&action=edit
Backtrace of the crash

Hi,

I'm trying to compile the latest version of llvm. I have checked out the
release_40 branch in my worktree, but llvm-tblgen keeps crashing.

I am using debian testing with GCC 6.2.1

To reproduce the crash:

cmake -DLLVM_TARGETS_TO_BUILD=X86 -DBUILD_SHARED_LIBS=ON
-DCMAKE_INSTALL_PREFIX=$HOME/.local -DCMAKE_BUILD_TYPE=RelWithDebInfo -G Ninja
..
ninja lib/Target/X86/X86GenRegisterInfo.inc # to go straight to the crash
...
0.      Program arguments: /home/philippe/packages/llvm/build/bin/llvm-tblgen
-gen-register-info -I /home/philippe/packages/llvm/lib/Target/X86 -I
/home/philippe/packages/llvm/include -I /home/philippe/packages/llvm/lib/Target
/home/philippe/packages/llvm/lib/Target/X86/X86.td -o
/home/philippe/packages/llvm/build/lib/Target/X86/X86GenRegisterInfo.inc.tmp 
Segmentation fault (core dumped)

I am attaching the full backtrace

The crash does not occur when building in debug.

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