[llvm-bugs] [Bug 34307] New: [5.0.0-rc2] clang-cl assertion during incorrect command line in response file

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34307

            Bug ID: 34307
           Summary: [5.0.0-rc2] clang-cl assertion during incorrect
                    command line in response file
           Product: clang
           Version: 5.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: egor.pugin at gmail.com
                CC: llvm-bugs at lists.llvm.org

Create 1.rsp file with contents (2 lines):
"-Xclang"
"-nostdinc"

Run:
clang-cl @1.rsp

Assertion failed: Index >= End && "Unexpected parser error.", file
C:\src\llvm_package_500_rc2\llvm\lib\Option\OptTable.cpp, line 337
Wrote crash dump file
"C:\Users\egorp\AppData\Local\Temp\clang-cl.exe-76118e.dmp"
0x00007FF7E34F7056 (0x0000000000000001 0x0000005CF618E330 0x0000000000000151
0x00007FFDB4A3AF61)
0x00007FFDB4A927A7 (0x0000000000000001 0x00007FF700000000 0x0000000000000000
0x0000005CF618E300), raise() + 0x1E7 bytes(s)
0x00007FFDB4A934A1 (0x0002000000000003 0x0000000000000003 0x00007FFDB4AE54D0
0x00007FF7E5F7E0B8), abort() + 0x31 bytes(s)
0x00007FFDB4A95202 (0x000002268A663010 0x0000000000000007 0x00007FF7E6096AF0
0x0000000000000151), _get_wpgmptr() + 0x1CA2 bytes(s)
0x00007FFDB4A950FD (0x0000000000000151 0x00007FF7E5F7E0B8 0x0000000000000000
0x0000000000000005), _get_wpgmptr() + 0x1B9D bytes(s)
0x00007FFDB4A9543F (0x0000000000000000 0x00007FF7E5271FFC 0x0000005CF618EDC8
0x00007FF7E5271FFC), _wassert() + 0x3F bytes(s)
0x00007FF7E3358747 (0x0000000000000002 0x000002268A642E80 0x00007FFDB4AD48EC
0x0000000000000000)
0x00007FF7E1D1370E (0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000)
0x00007FF7E526E781 (0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000)
0x00007FFDB5B72774 (0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000), BaseThreadInitThunk() + 0x14 bytes(s)
0x00007FFDB8320D51 (0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000), RtlUserThreadStart() + 0x21 bytes(s)

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