[all-commits] [llvm/llvm-project] 7f08b5: [lldb][DIL] Fix infinite loop parsing cv-qualifier...

[Yao Qi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7f08b5508201caca4033c9af69237f970e55d902
      https://github.com/llvm/llvm-project/commit/7f08b5508201caca4033c9af69237f970e55d902
  Author: Yao Qi <yao_qi at apple.com>
  Date:   2026-06-25 (Thu, 25 Jun 2026)

  Changed paths:
    M lldb/source/ValueObject/DILParser.cpp
    M lldb/test/API/commands/frame/var-dil/expr/Casts/TestFrameVarDILCast.py

  Log Message:
  -----------
  [lldb][DIL] Fix infinite loop parsing cv-qualifiers in a C-style cast (#205087)

`ParseBuiltinType` loops over identifier tokens to assemble a builtin type
name. When it encountered the "const" or "volatile" qualifier it executed
`continue` to skip the qualifier without first advancing the lexer, so the loop
re-examined the same token forever. Any cast expression beginning with a
cv-qualifier therefore hung the parser before any evaluation took place.

Advance past the qualifier token before continuing the loop.

Reproduce (hangs forever before the fix):

```
  $ ./bin/lldb ./bin/lldb
  (lldb) breakpoint set -n main
  (lldb) run
  (lldb) frame variable '(const int)1'
```

After the fix the qualifier is consumed and the cast evaluates normally
("(const int)1" -> 1); a bare qualifier with no type name is reported as an
ordinary parse error instead of hanging.

Adds regression coverage to the DIL Casts API test.



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