[PATCH] D53329: Generate DIFile with main program if source is not available

[Yonghong Song via Phabricator via cfe-commits]

yonghong-song added a comment.

F7549230: clang-crash-x86.tar <https://reviews.llvm.org/F7549230>

Just attached a new test case (clang-crash-x86.tar) which works even if the compiler is compiled with assertion on. JIT now generates x86-64 code instead of BPF code.

The error message looks like:

  Failure value returned from cantFail wrapped call
  UNREACHABLE executed at /home/yhs/work/llvm/include/llvm/Support/Error.h:732!
  Aborted (core dumped)

The core stack looks like

  Core was generated by `./clang-test'. 
  Program terminated with signal SIGABRT, Aborted. 
  #0  0x00007f47542e0277 in raise () from /lib64/libc.so.6 
  (gdb) where
  #0  0x00007f47542e0277 in raise () from /lib64/libc.so.6
  #1  0x00007f47542e1968 in abort () from /lib64/libc.so.6
  #2  0x00000000045f66b6 in llvm::llvm_unreachable_internal (msg=0x5df9ba0 "Failure value returned from cantFail wrapped call",  
      file=0x5df9bd8 "/home/yhs/work/llvm/include/llvm/Support/Error.h", line=732)
      at /home/yhs/work/llvm/lib/Support/ErrorHandling.cpp:222
  #3  0x00000000032482f1 in llvm::cantFail<unsigned int> (ValOrErr=..., 
      Msg=0x5df9ba0 "Failure value returned from cantFail wrapped call") at /home/yhs/work/llvm/include/llvm/Support/Error.h:732
  #4  0x0000000003247183 in llvm::MCStreamer::EmitDwarfFileDirective (this=0x8625e40, FileNo=0, Directory=..., Filename=..., 
      Checksum=0x8640868, Source=..., CUID=0) at /home/yhs/work/llvm/include/llvm/MC/MCStreamer.h:786 
  #5  0x000000000324184b in llvm::DwarfCompileUnit::getOrCreateSourceID (this=0x8630ed0, File=0x861ae80)
      at /home/yhs/work/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp:110
  #6  0x00000000032a1903 in llvm::DwarfUnit::addSourceLine (this=0x8630ed0, Die=..., Line=13, File=0x861ae80)
      at /home/yhs/work/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp:395
  #7  0x00000000032a1a95 in llvm::DwarfUnit::addSourceLine (this=0x8630ed0, Die=..., G=0x861af10)
      at /home/yhs/work/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp:410 
  #8  0x0000000003241b5c in llvm::DwarfCompileUnit::getOrCreateGlobalVariableDIE (this=0x8630ed0, GV=0x861af10, GlobalExprs=...)
      at /home/yhs/work/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp:153
  #9  0x000000000325b5f9 in llvm::DwarfDebug::beginModule (this=0x862ec00)
      at /home/yhs/work/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:782
  #10 0x000000000320636d in llvm::AsmPrinter::doInitialization (this=0x8626820, M=...) 
      at /home/yhs/work/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:309
  #11 0x00000000024eeea4 in llvm::X86AsmPrinter::doInitialization (this=0x8626820, M=...)
      at /home/yhs/work/llvm/lib/Target/X86/X86AsmPrinter.h:137
  #12 0x00000000044aa4ee in llvm::FPPassManager::doInitialization (this=0x8633e10, M=...)
      at /home/yhs/work/llvm/lib/IR/LegacyPassManager.cpp:1688
  #13 0x00000000044aa6a2 in (anonymous namespace)::MPPassManager::runOnModule (this=0x868a380, M=...) 
      at /home/yhs/work/llvm/lib/IR/LegacyPassManager.cpp:1720
  #14 0x00000000044ab027 in llvm::legacy::PassManagerImpl::run (this=0x860e710, M=...)
      at /home/yhs/work/llvm/lib/IR/LegacyPassManager.cpp:1857
  #15 0x00000000044ab2a7 in llvm::legacy::PassManager::run (this=0x7fff67f37fe0, M=...)
      at /home/yhs/work/llvm/lib/IR/LegacyPassManager.cpp:1888
  #16 0x0000000002d4a39b in llvm::MCJIT::emitObject (this=0x862ab00, M=0x85a7bd0)
      at /home/yhs/work/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp:169
  #17 0x0000000002d4a669 in llvm::MCJIT::generateCodeForModule (this=0x862ab00, M=0x85a7bd0)
      at /home/yhs/work/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp:208
  #18 0x0000000002d4ab68 in llvm::MCJIT::finalizeObject (this=0x862ab00)
      at /home/yhs/work/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp:263
  #19 0x000000000040ac10 in main ()

This coredump stack matches one of stacks I hit earlier with using bcc infrastructure to reproduce the issue.
Thanks!


Repository:
  rC Clang

https://reviews.llvm.org/D53329