feat: std.compat module support + cxx_scan restat + E2E#38
Merged
Conversation
std.compat: Clang's libc++ ships std.compat.cppm alongside std.cppm. Add discovery, precompilation, staging, and -fmodule-file flag for std.compat. GCC's bits/std.cc implicitly covers std.compat so no GCC changes needed. cxx_scan restat: re-implement backup-compare-restore pattern on scan rule. Previous CI failure was proven to be a cache-restore fluke. When .ddi content is unchanged, old file is restored (preserving mtime) + restat = 1 prevents downstream cascade. E2E: add 41_llvm_std_compat.sh testing import std.compat with Clang.
Sunrisepeak
force-pushed
the
feat/stdcompat-restat-e2e
branch
from
f9e5a62 to
c7c1c3e
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Three remaining items in one PR:
std.compat.cppmfor Clang/libc++. GCC'sbits/std.ccimplicitly covers std.compat, no GCC changes needed.41_llvm_std_compat.sh—import std.compatwith Clang, verifiesprintfworks via compat layer.Test plan
mcpp build+mcpp test— 12/12 pass41_llvm_std_compat.sh— OK38_llvm_modules.sh— OK (no regression)