Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC

Commits:

• 7b9a75f0
  by Phil Hazelden at 2026-03-26T03:58:37-04:00

  Fix build with werror on glibc 2.43.
  
  We've been defining `_XOPEN_SOURCE` and `_POSIX_C_SOURCE` to the same
  values as defined in glibc prior to 2.43. But in 2.43, glibc changes
  them to new values, which means we get a warning when redefining them.
  By `#undef`ing them first, we no longer get a warning.
  
  Closes #27076.
  

1 changed file:

• rts/include/rts/PosixSource.h

Changes:

    Oracle's Solaris 11 supports only up to XPG6, hence the ifdef.

   */

+#undef _POSIX_C_SOURCE

+#undef _XOPEN_SOURCE

 #if defined(solaris2_HOST_OS)

 #define _POSIX_C_SOURCE 200112L

 #define _XOPEN_SOURCE   600