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Pull request overview
This PR fixes clang warnings on Windows that point to legitimate logic bugs and undefined behavior. Compiling with clang instead of MSVC generates more warnings, helping to identify real issues in the codebase.
Changes:
- Fixed constexpr pointer type declarations for string literals
- Removed unused variables and functions
- Corrected struct initialization syntax from
{0}to{}where clang warned - Fixed critical logic bug in
IsStandardTerminal()where wrong handle was being checked - Fixed parameter naming shadowing issue in
SignalHandler::Install()
Reviewed changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| tools/test/windows/tw.cc | Fixed constexpr declaration and removed unused helper functions |
| third_party/def_parser/BUILD | Added compiler flag to suppress unused variable warning (has issue) |
| src/tools/launcher/util/launcher_util.cc | Removed unused size variable from FormatMessageA call |
| src/main/native/windows/processes-jni.cc | Updated LARGE_INTEGER initialization syntax |
| src/main/native/windows/process.cc | Updated struct initialization and removed unused DupeHandle function |
| src/main/cpp/util/errors_windows.cc | Removed unused size variable from FormatMessageA call |
| src/main/cpp/blaze_util_windows.cc | Fixed parameter shadowing, struct initialization, removed unused function, and critically fixed loop variable bug in IsStandardTerminal |
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Compiling with clang rather than MSVC generates more warnings on Windows, some of which point to legitimate logic bugs and UB.
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meteorcloudy
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Feb 23, 2026
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@iancha1992 |
Wyverald
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Feb 23, 2026
| hdrs = ["def_parser.h"], | ||
| copts = select({ | ||
| "@rules_cc//cc/compiler:clang": [ | ||
| # third_party/def_parser/def_parser.cc:349:10: warning: unused variable 'size' [-Wunused-variable] |
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why don't we just remove the unused variable here?
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Description
Compiling with clang rather than MSVC generates more warnings on Windows, some of which point to legitimate logic bugs, memory safety issues or dead code.
Motivation
Build API Changes
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RELNOTES: None