From 1dda3c51adabf474fada2dca98d07cff39d601ea Mon Sep 17 00:00:00 2001
From: phfix <35774904+phfix@users.noreply.github.com>
Date: Tue, 10 Mar 2026 22:14:46 +0100
Subject: [PATCH] test/cache_api: avoid false rpt_fcn pointer mismatch on
 Windows (#6274)

* test: avoid false function-pointer mismatch for rpt_fcn on Windows
* test: relax rpt_fcn comparison for MinGW
---
 .github/workflows/msys2.yml | 4 ++--
 test/cache_common.c         | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/msys2.yml b/.github/workflows/msys2.yml
index 7cef086e37a..060dbbdcc18 100644
--- a/.github/workflows/msys2.yml
+++ b/.github/workflows/msys2.yml
@@ -83,11 +83,11 @@ jobs:
 
       - name: Run Tests
         run: |
-          ctest . --parallel 2 -C ${{ inputs.build_mode }} -E "cache_api|dt_arith|err_compat"
+          ctest . --parallel 2 -C ${{ inputs.build_mode }} -E "dt_arith|err_compat"
         working-directory: ${{ runner.workspace }}/build
 
       - name: Run Expected to Fail Tests
         run: |
-          ctest . --parallel 2 -C ${{ inputs.build_mode }} -R "cache_api|dt_arith|err_compat"
+          ctest . --parallel 2 -C ${{ inputs.build_mode }} -R "dt_arith|err_compat"
         working-directory: ${{ runner.workspace }}/build
         continue-on-error: true
diff --git a/test/cache_common.c b/test/cache_common.c
index 334821b623e..45b64a9e4db 100644
--- a/test/cache_common.c
+++ b/test/cache_common.c
@@ -4990,8 +4990,12 @@ resize_configs_are_equal(const H5C_auto_size_ctl_t *a, const H5C_auto_size_ctl_t
 {
     if (a->version != b->version)
         return (false);
+    else if ((a->rpt_fcn == NULL) != (b->rpt_fcn == NULL))
+        return (false);
+#ifndef H5_HAVE_MINGW
     else if (a->rpt_fcn != b->rpt_fcn)
         return (false);
+#endif
     else if (compare_init && (a->set_initial_size != b->set_initial_size))
         return (false);
     else if (compare_init && (a->initial_size != b->initial_size))