[LLVMbugs] [Bug 11518] New: clang frontend cmd SEGV after "cannot compile this conditional operator yet"

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11518

             Bug #: 11518
           Summary: clang frontend cmd SEGV after "cannot compile this
                    conditional operator yet"
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: mnemo at minimum.se
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 7695
  --> http://llvm.org/bugs/attachment.cgi?id=7695
TC for the uncompilable conditional (doesn't hit SEGV though)

Unfortunately, I'm not allowed to paste the exact error, but it looks similar
to this:

blaH.h:1974:50: error: cannot compile this conditional operator yet
        void                    SomeFunc(BOOL value) { value ? thing.field = 1
: thing.field = 0; }
                                                                        
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clang: note: diagnostic msg: Preprocessed source(s) are located at:
clang: note: diagnostic msg: /tmp/SOME-FILENAME-lCCbJS.ii
make[2]: *** [../../blah/blah/file.o] Error 254
0  clang           0x000000000182c0cf
1  clang           0x000000000182c559
2  libpthread.so.0 0x00002b42ea8c3c60
3  clang           0x00000000015ddd3b
4  clang           0x00000000015dd6ca
5  clang           0x000000000179ceef
llvm::FPPassManager::runOnFunction(llvm::Function&) + 335
6  clang           0x000000000179c90c
llvm::FunctionPassManagerImpl::run(llvm::Function&) + 428
7  clang           0x000000000179c72b
llvm::FunctionPassManager::run(llvm::Function&) + 139
8  clang           0x00000000007a18dc
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*,
clang::BackendAction, llvm::raw_ostream*) + 4636
9  clang           0x000000000079fee2
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 274
10 clang           0x000000000089b153 clang::ParseAST(clang::Sema&, bool) + 403
11 clang           0x000000000079f3e2 clang::CodeGenAction::ExecuteAction() +
738
12 clang           0x0000000000689259
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 873
13 clang           0x0000000000674c5a
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2714
14 clang           0x000000000066d176 cc1_main(char const**, char const**, char
const*, void*) + 6182
15 clang           0x00000000006710dc main + 748
16 libc.so.6       0x00002b42eb497eff __libc_start_main + 255
17 clang           0x000000000066b889
Stack dump:
0.      Program arguments: /home/autobuilder/src/llvm/llvm/Release/bin/clang
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free
-disable-llvm-verifier ... lots of source filenames and switches etc here ...
1.      <eof> parser at end of file
2.      Per-function optimization
3.      Running pass 'Simplify the CFG' on function
'@_ZN12HTML_Element26SetHasRealSizeDependentCssEi'
clang: error: unable to execute command: Segmentation fault
clang: error: clang frontend command failed due to signal 2 (use -v to see
invocation)
clang: note: diagnostic msg: Please submit a bug report to
http://llvm.org/bugs/ and include command line arguments and all diagnostic
information.
clang: note: diagnostic msg: Preprocessed source(s) are located at:
clang: note: diagnostic msg: /tmp/SOMETHING-qIPDL4.ii



I also make a small TC that can repro the "cannot compile this conditional
operator yet" part, but my small TC doesn't hit the SEGV it seems.

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