Fix release check version logic (#1438)

2 files changed, 11 insertions, 11 deletions

diff --git a/src/H5.c b/src/H5.c
index d4fca9a..4c449d0 100644
--- a/src/H5.c
+++ b/src/H5.c
@@ -70,9 +70,9 @@ static int H5__mpi_delete_cb(MPI_Comm comm, int keyval, void *attr_val, int *fla
 /* Library Private Variables */
 /*****************************/
 
-/* Library incompatible release versions */
-const unsigned VERS_RELEASE_EXCEPTIONS[]    = {0};
-const unsigned VERS_RELEASE_EXCEPTIONS_SIZE = 0;
+/* Library incompatible release versions, develop releases are incompatible by design */
+const unsigned VERS_RELEASE_EXCEPTIONS[]    = {0, 1};
+const unsigned VERS_RELEASE_EXCEPTIONS_SIZE = 2;
 
 /* statically initialize block for pthread_once call used in initializing */
 /* the first global mutex                                                 */
@@ -954,6 +954,7 @@ H5check_version(unsigned majnum, unsigned minnum, unsigned relnum)
     static int          checked                  = 0; /* If we've already checked the version info */
     static unsigned int disable_version_check    = 0; /* Set if the version check should be disabled */
     static const char * version_mismatch_warning = VERSION_MISMATCH_WARNING;
+    static const char * release_mismatch_warning = RELEASE_MISMATCH_WARNING;
     herr_t              ret_value                = SUCCEED; /* Return value */
 
     FUNC_ENTER_API_NOINIT_NOERR_NOFS
@@ -974,10 +975,7 @@ H5check_version(unsigned majnum, unsigned minnum, unsigned relnum)
     }
 
     /* H5_VERS_MAJOR and H5_VERS_MINOR must match */
-    /* Cast relnum to int to avoid warning for unsigned < 0 comparison
-     * in first release versions */
-    if (H5_VERS_MAJOR != majnum || H5_VERS_MINOR != minnum || H5_VERS_RELEASE > (int)relnum) {
-
+    if (H5_VERS_MAJOR != majnum || H5_VERS_MINOR != minnum) {
         switch (disable_version_check) {
             case 0:
                 HDfprintf(stderr, "%s%s", version_mismatch_warning,
@@ -1012,9 +1010,10 @@ H5check_version(unsigned majnum, unsigned minnum, unsigned relnum)
                 break;
         } /* end switch */
 
-    } /* end if (H5_VERS_MAJOR != majnum || H5_VERS_MINOR != minnum || H5_VERS_RELEASE > relnum) */
+    } /* end if (H5_VERS_MAJOR != majnum || H5_VERS_MINOR != minnum) */
 
     /* H5_VERS_RELEASE should be compatible, we will only add checks for exceptions */
+    /* Library develop release versions are incompatible by design */
     if (H5_VERS_RELEASE != relnum) {
         for (unsigned i = 0; i < VERS_RELEASE_EXCEPTIONS_SIZE; i++) {
             /* Check for incompatible headers or incompatible library */
@@ -1022,7 +1021,7 @@ H5check_version(unsigned majnum, unsigned minnum, unsigned relnum)
                 switch (disable_version_check) {
                     case 0:
                         HDfprintf(
-                            stderr, "%s%s", version_mismatch_warning,
+                            stderr, "%s%s", release_mismatch_warning,
                             "You can, at your own risk, disable this warning by setting the environment\n"
                             "variable 'HDF5_DISABLE_VERSION_CHECK' to a value of '1'.\n"
                             "Setting it to 2 or higher will suppress the warning messages totally.\n");
@@ -1041,7 +1040,7 @@ H5check_version(unsigned majnum, unsigned minnum, unsigned relnum)
                                   "%s'HDF5_DISABLE_VERSION_CHECK' "
                                   "environment variable is set to %d, application will\n"
                                   "continue at your own risk.\n",
-                                  version_mismatch_warning, disable_version_check);
+                                  release_mismatch_warning, disable_version_check);
                         /* Mention the versions we are referring to */
                         HDfprintf(stderr, "Headers are %u.%u.%u, library is %u.%u.%u\n", majnum, minnum,
                                   relnum, (unsigned)H5_VERS_MAJOR, (unsigned)H5_VERS_MINOR,
diff --git a/test/CMakeTests.cmake b/test/CMakeTests.cmake
index b2ed8e8..4e828f8 100644
--- a/test/CMakeTests.cmake
+++ b/test/CMakeTests.cmake
@@ -649,10 +649,11 @@ set_tests_properties (H5TEST-tcheck_version-minor PROPERTIES
     WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}/H5TEST
     WILL_FAIL "true"
 )
-# release + 1 should pass
+# release + 1 should pass on non-develop branches
 add_test (NAME H5TEST-tcheck_version-release COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:tcheck_version> "-tr")
 set_tests_properties (H5TEST-tcheck_version-release PROPERTIES
     WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}/H5TEST
+    WILL_FAIL "true"
 )
 
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