Merge commit '0d5021e1d8ee8c943925ad23c305b6c84962e4b8' into HEAD

diff --cc gcc/testsuite/ChangeLog.omp
index e0ce0fd93be29e53b5c489e12cc1886bef12335c,6ca93eadb09ac351ba39a881f0598d063d23382c..caf8833838293703bf6a7fecfc7004691218bb6f
--- 1/gcc/testsuite/ChangeLog.omp
--- 2/gcc/testsuite/ChangeLog.omp
+++ b/gcc/testsuite/ChangeLog.omp
@@@ -1,11 -1,32 +1,40 @@@
 +2025-03-19  Thomas Schwinge  <tschwinge@baylibre.com>
 +
 +      Backported from trunk:
 +      2025-03-13  Thomas Schwinge  <tschwinge@baylibre.com>
 +
 +      * lib/gcc-dg.exp (find-dg-do-what): Move...
 +      * lib/target-supports-dg.exp: ... here.
 +
+ 2025-03-18  Tobias Burnus  <tburnus@baylibre.com>
+ 
+       Backported from master:
+       2025-03-17  Tobias Burnus  <tburnus@baylibre.com>
+ 
+       PR fortran/115271
+       * gfortran.dg/gomp/declare-variant-mod-1-use.f90: Move to
+       libgomp/testsuite/libgomp.fortran/.
+       * gfortran.dg/gomp/declare-variant-mod-1.f90: Likewise.
+ 
+ 2025-03-18  Tobias Burnus  <tburnus@baylibre.com>
+ 
+       Backported from master:
+       2025-03-15  Tobias Burnus  <tburnus@baylibre.com>
+ 
+       PR fortran/115271
+       * gfortran.dg/gomp/declare-variant-mod-1-use.f90: New test.
+       * gfortran.dg/gomp/declare-variant-mod-1.f90: New test.
+       * gfortran.dg/gomp/declare-variant-mod-2-use.f90: New test.
+       * gfortran.dg/gomp/declare-variant-mod-2.f90: New test.
+ 
+ 2025-03-18  Sandra Loosemore  <sloosemore@baylibre.com>
+ 
+       Backported from master:
+       2025-03-11  Sandra Loosemore  <sloosemore@baylibre.com>
+ 
+       PR c/118579
+       * c-c++-common/gomp/pr118579.c: New testcase.
+ 
  2025-02-28  Thomas Schwinge  <tschwinge@baylibre.com>
  
        Backported from trunk:

diff --cc libstdc++-v3/src/c++20/tzdb.cc
Simple merge