[LLVMbugs] Re: tblgen bug?

[Reid Spencer]

Follow up ...

The problem is that an exception is thrown by Record::getValueAsDag. The 
offending lines of code are:

723       if (DagInit *DI = dynamic_cast<DagInit*>(R->getValue()))
724         return DI;
725       throw "Record '" + getName() + "', field '" + FieldName +
726             "' does not have a dag initializer!";

The dynamic_cast produced 0 I guess.  What could cause this?

Reid.


Reid Spencer wrote:

> I'm getting the following during a rebuild on linux. This problem also 
> caused the nightly test to fail on Linux last night:
> 
> gmake[3]: Entering directory `/proj/work/llvm/build/lib/Target/PowerPC'
> Building PowerPC instruction names with tblgen
> terminate called after throwing an instance of 'std::string'
> /proj/work/llvm/build/tools/Debug/tblgen((anonymous 
> namespace)::PrintStackTrace()+0x1a)[0x80f941a]
> /proj/work/llvm/build/tools/Debug/tblgen((anonymous 
> namespace)::SignalHandler(int)+0xc7)[0x80f9687]
> /lib/tls/libc.so.6[0x420277b8]
> /lib/tls/libc.so.6(abort+0x1d5)[0x42028c55]
> /proj/install/lib/libstdc++.so.6(__gnu_cxx::__verbose_terminate_handler()+0x101)[0x400a6081] 
> 
> /proj/install/lib/libstdc++.so.6(__cxxabiv1::__terminate(void 
> (*)())+0x15)[0x400a3c65]
> /proj/install/lib/libstdc++.so.6[0x400a3ca2]
> /proj/install/lib/libstdc++.so.6[0x400a3e22]
> /proj/work/llvm/build/tools/Debug/tblgen(llvm::Record::getValueAsDag(std::basic_string<char, 
> std::char_traits<char>, std::allocator<char> > const&) 
> const+0x313)[0x80dd3f5]
> /proj/work/llvm/build/tools/Debug/tblgen(llvm::CodeGenInstruction::CodeGenInstruction[in-charge](llvm::Record*, 
> std::basic_string<char, std::char_traits<char>, std::allocator<char> > 
> const&)+0x691)[0x80a9daf]
> /proj/work/llvm/build/tools/Debug/tblgen(llvm::CodeGenTarget::ReadInstructions() 
> const+0x2e2)[0x80a82b2]
> /proj/work/llvm/build/tools/Debug/tblgen(llvm::CodeGenTarget::getInstructions() 
> const+0x2f)[0x809fc71]
> /proj/work/llvm/build/tools/Debug/tblgen(llvm::CodeGenTarget::inst_begin() 
> const+0x21)[0x809fc27]
> /proj/work/llvm/build/tools/Debug/tblgen(llvm::InstrInfoEmitter::runEnums(std::basic_ostream<char, 
> std::char_traits<char> >&)+0x194)[0x80c1904]
> /proj/work/llvm/build/tools/Debug/tblgen(main+0x3de)[0x80e6b9a]
> /lib/tls/libc.so.6(__libc_start_main+0xe4)[0x42015704]
> /proj/work/llvm/build/tools/Debug/tblgen(std::basic_string<char, 
> std::char_traits<char>, std::allocator<char> >::append(char const*, 
> unsigned)+0x41)[0x809ec21]
> gmake[3]: *** [PowerPCGenInstrNames.inc] Aborted (core dumped)
> gmake[3]: Leaving directory `/proj/work/llvm/build/lib/Target/PowerPC'
> gmake[2]: *** [all] Error 1
> gmake[2]: Leaving directory `/proj/work/llvm/build/lib/Target'
> gmake[1]: *** [Target/.makeall] Error 2
> gmake[1]: Leaving directory `/proj/work/llvm/build/lib'
> gmake: *** [all] Error 1
> 
>