[all-commits] [llvm/llvm-project] b65076: [lldb][test] Add test for completing ObjCObjectTyp...

[Michael Buch via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b650764b16b5c8790325775ac5f87f0b1c0beca7
      https://github.com/llvm/llvm-project/commit/b650764b16b5c8790325775ac5f87f0b1c0beca7
  Author: Michael Buch <michaelbuch12 at gmail.com>
  Date:   2024-06-14 (Fri, 14 Jun 2024)

  Changed paths:
    A lldb/test/Shell/Expr/Inputs/objc-cast.cpp
    A lldb/test/Shell/Expr/TestObjCIDCast.test

  Log Message:
  -----------
  [lldb][test] Add test for completing ObjCObjectType (#95405)

This is a minimal reproducer for a crash where we would try to call
`DumpTypeDescription` on an incomplete type. This crash surfaced as part
of an NFC refactor of some of the logic in `GetCompleteQualType`:
```
(lldb) expr -l objc -- *(id)0x1234
Stack dump:
0.      Program arguments: ./bin/lldb a.out -o "b main" -o run -o "expr -l objc -- *(id)0x1234"
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var LLVM_SYMBOLIZER_PATH to point to it):
0  lldb                     0x0000000102ec768c llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  lldb                     0x0000000102ec6010 llvm::sys::RunSignalHandlers() + 112
2  lldb                     0x0000000102ec7fa8 SignalHandler(int) + 292
3  libsystem_platform.dylib 0x000000018c7a8c44 _sigtramp + 56
4  LLDB                     0x0000000116b2030c lldb_private::TypeSystemClang::DumpTypeDescription(void*, lldb_private::Stream&, lldb::DescriptionLevel, lldb_private::ExecutionContextScope*) + 588
5  LLDB                     0x00000001166b5124 lldb_private::CompilerType::DumpTypeDescription(lldb_private::Stream*, lldb::DescriptionLevel, lldb_private::ExecutionContextScope*) const + 228
6  LLDB                     0x0000000116d4f08c IRForTarget::CreateResultVariable(llvm::Function&) + 2076
```

rdar://129633122



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