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Re: [PATCH v2] compat/posix.h: enable UNUSED warning messages for Clang

From
DLDominik Loidolt <dominik.loidolt@univie.ac.at>
Date
Jun 5, 2026, 11:50 UTC
Message-ID
<aiK4BR86cuq5bmCe@four.local>
In-Reply-To
<aiKnqlI7WdcskDAs@pks.im>
Thanks for the review!

I noticed that the version-check style now differs between GCC and the newly introduced Clang checks, would it make sense to make them consistent? Like:

diff --git a/compat/posix.h b/compat/posix.h
index faaae1b655..e20f8ec61e 100644
--- a/compat/posix.h
+++ b/compat/posix.h
@@ -17,7 +17,8 @@
 */
 #if defined(__GNUC__) && defined(__GNUC_MINOR__)
 # define GIT_GNUC_PREREQ(maj, min) \
-	((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+	((__GNUC__ > (maj)) || \
+	(__GNUC__ == (maj) && (__GNUC_MINOR__ >= (min))))
 #else
  #define GIT_GNUC_PREREQ(maj, min) 0
 #endif

I think the current GCC bit-shift check is harder to read.
If you agree, I could send a 2-patch v3 series, which would also clean up the
comment style nit.

 Dominik
Previous: Patrick SteinhardtNext: Patrick Steinhardt
Message 7 of 20 in “compat/posix.h: enable UNUSED warning messages for Clang”
  1. compat/posix.h: enable UNUSED warning messages for ClangDominik Loidolt, May 3, 2026
  2. Junio C HamanoMay 4, 2026
  3. Junio C HamanoMay 4, 2026
  4. Dominik LoidoltJun 5, 2026
  5. compat/posix.h: enable UNUSED warning messages for ClangDominik Loidolt, Jun 5, 2026
  6. Patrick SteinhardtJun 5, 2026
  7. Dominik LoidoltJun 5, 2026
  8. Patrick SteinhardtJun 5, 2026
  9. Dominik LoidoltJun 5, 2026
  10. Patrick SteinhardtJun 8, 2026
  11. 1/2 compat/posix.h: enable UNUSED warning messages for ClangDominik Loidolt, Jun 8, 2026
  12. 2/2 compat/posix.h: simplify GIT_GNUC_PREREQ() comparisonDominik Loidolt, Jun 8, 2026
  13. Patrick SteinhardtJun 12, 2026
  14. Dominik LoidoltJun 12, 2026
  15. 0/3 compat/posix.h: enable UNUSED warning messages for ClangDominik Loidolt, Jun 13, 2026
  16. 2/3 compat/posix.h: clean up GIT_GNUC_PREREQ() and UNUSEDDominik Loidolt, Jun 13, 2026
  17. 1/3 compat/posix.h: enable UNUSED warning messages for ClangDominik Loidolt, Jun 13, 2026
  18. 3/3 compat/posix.h: simplify GIT_GNUC_PREREQ() comparisonDominik Loidolt, Jun 13, 2026
  19. Junio C HamanoJun 13, 2026
  20. Patrick SteinhardtJun 15, 2026

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