[Bug 1677140] [NEW] crash on project creation, probably LLVM 3.9 vs 4.0 related

[Rebecca Palmer]

Public bug reported:

On creating a new project, kdevelop shows an "Unable to load the project
file" error box, then crashes when this is OKd.  The backtrace suggests
this is https://bugs.debian.org/846410 , reappearing because Ubuntu mesa
is now LLVM 4.0:

Thread 1 "kdevelop" received signal SIGSEGV, Segmentation fault.
0x00007fffc1a22a6f in llvm::SmallVectorTemplateBase<llvm::cl::parser<llvm::ScheduleDAGInstrs* (*)(llvm::MachineSchedContext*)>::OptionInfo, false>::grow(unsigned long) () from /usr/lib/x86_64-linux-gnu/libLLVM-4.0.so.1
(gdb) bt full
#0  0x00007fffc1a22a6f in llvm::SmallVectorTemplateBase<llvm::cl::parser<llvm::ScheduleDAGInstrs* (*)(llvm::MachineSchedContext*)>::OptionInfo, false>::grow(unsigned long) () from /usr/lib/x86_64-linux-gnu/libLLVM-4.0.so.1
No symbol table info available.
#1  0x00007fffc1a22b5e in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-4.0.so.1
No symbol table info available.
#2  0x00007fffa2cd42f2 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-3.9.so.1
No symbol table info available.
#3  0x00007ffff7de87ca in ?? () from /lib64/ld-linux-x86-64.so.2
No symbol table info available.
[...]

(This was tested in a zesty chroot, as part of
https://bugs.debian.org/848368 testing; as kdevelop is not my usual IDE,
I don't have any existing projects to try opening.)

** Affects: kdevelop (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1677140

Title:
  crash on project creation, probably LLVM 3.9 vs 4.0 related

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