Add an equivalent to -grecord-command-line/-grecord-gcc-switches
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A-CLI
A-debuginfo
C-feature-request
T-compiler
WG-debugging
- Dominant language
- Rust
- Stars
- 119k
- Forks
- 16.1k
- PR merge metrics
- PR metrics pending
Description
Other widely used compilers (gcc, clang, etc) have the ability to record their command line arguments in the debug information (for DWARF in the DW_AT_producer field). Rustc currently hardcodes this to "" when calling LLVMRustDIBuilderCreateCompileUnit.
@rustbot label +A-debuginfo +WG-debugging
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing rustc's call to LLVMRustDIBuilderCreateCompileUnit and inspect how the empty DW_AT_producer value is passed into debug information. Compare the requested -grecord-command-line/-grecord-gcc-switches behavior with the existing compiler integration, then verify that recorded command-line arguments appear in the generated DWARF producer field.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100