[LLVMbugs] [Bug 19767] New: Assertion

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19767

            Bug ID: 19767
           Summary: Assertion
           Product: clang
           Version: trunk
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jonathan.sauer at gmx.de
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 12520
  --> http://llvm.org/bugs/attachment.cgi?id=12520&action=edit
Log of clang run

The following code crashes clang r209002 when being compiled with -g:

template <bool>
struct enable_if { using type = void; };

template <typename L, typename enable_if<true>::type* = nullptr>
static void testVoidIf(L&&) { }

int main()
{
    testVoidIf([]() {});
}


This results in (full log attached):

% ~/LLVM/build/Release+Asserts/bin/clang -std=c++11 -g clang.cpp
Assertion failed: (DTy.getTag() == dwarf::DW_TAG_enumeration_type), function
isUnsignedDIType, file
/Users/rynnsauer/LLVM/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp, line 756.
0  clang                    0x000000010f41ee28
llvm::sys::PrintStackTrace(__sFILE*) + 40
1  clang                    0x000000010f41f324 SignalHandler(int) + 548
2  libsystem_platform.dylib 0x00007fff968f25aa _sigtramp + 26
3  libsystem_platform.dylib 000000000000000000 _sigtramp + 1769003632
4  clang                    0x000000010f41f0e6 abort + 22
5  clang                    0x000000010f41f0c1 __assert_rtn + 81
6  clang                    0x000000010ede1208
isUnsignedDIType(llvm::DwarfDebug*, llvm::DIType) + 280
7  clang                    0x000000010ede1144
isUnsignedDIType(llvm::DwarfDebug*, llvm::DIType) + 84


The code compiles successfully with r207835.

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