From cf495f8db76b3c4d79e03f09d16d409ad3363255 Mon Sep 17 00:00:00 2001
From: Thomas Beutlich <modelica@tbeu.de>
Date: Thu, 28 Mar 2024 19:21:14 +0100
Subject: [PATCH] Update matio library to 1.5.26 (#4285)

---
 Modelica/Resources/C-Sources/ModelicaMatIO.c | 30 +++-----------------
 Modelica/Resources/C-Sources/ModelicaMatIO.h |  6 ++--
 2 files changed, 7 insertions(+), 29 deletions(-)

diff --git a/Modelica/Resources/C-Sources/ModelicaMatIO.c b/Modelica/Resources/C-Sources/ModelicaMatIO.c
index 957d6be0e6..6d8c95f12d 100644
--- a/Modelica/Resources/C-Sources/ModelicaMatIO.c
+++ b/Modelica/Resources/C-Sources/ModelicaMatIO.c
@@ -81,18 +81,6 @@
 /* Extended sparse matrix data types */
 /* #undef EXTENDED_SPARSE */
 
-/* Define to 1 if you have the `fseeko' function. */
-#undef HAVE_FSEEKO
-
-/* Define to 1 if you have the `ftello' function. */
-#undef HAVE_FTELLO
-
-/* Define to 1 if you have the `fseeko64' function. */
-#undef HAVE_FSEEKO64
-
-/* Define to 1 if you have the `ftello64' function. */
-#undef HAVE_FTELLO64
-
 /* Define to 1 if you have the `_fseeki64' function. */
 #if defined(_MSC_VER) && _MSC_VER >= 1400
 #define HAVE__FSEEKI64 1
@@ -107,12 +95,6 @@
 #undef HAVE__FTELLI64
 #endif
 
-/* Define if 64-bit file address support in 32-bit OS. */
-#undef _FILE_OFFSET_BITS
-
-/* Define if 64-bit file address support in 32-bit OS. */
-#undef _LARGEFILE64_SOURCE
-
 /* Define to 1 if you have the <inttypes.h> header file. */
 #if defined(_WIN32)
 #if defined(_MSC_VER) && _MSC_VER >= 1800
@@ -291,8 +273,7 @@
 #define MATIO_LFS
 #define fseeko _fseeki64
 #define ftello _ftelli64
-#elif !defined(HAVE_FSEEKO) && !defined(HAVE_FTELLO) && defined(HAVE_FSEEKO64) && \
-    defined(HAVE_FTELLO64)
+#elif defined(HAVE_FSEEKO64) && defined(HAVE_FTELLO64)
 #define MATIO_LFS
 #define fseeko fseeko64
 #define ftello ftello64
@@ -12465,11 +12446,7 @@ Mat_H5ReadVarInfo(matvar_t *matvar, hid_t dset_id)
     type_id = H5Aget_type(attr_id);
     class_str = (char *)calloc(H5Tget_size(type_id) + 1, 1);
     if ( NULL != class_str ) {
-        herr_t herr;
-        hid_t class_id = H5Tcopy(H5T_C_S1);
-        H5Tset_size(class_id, H5Tget_size(type_id));
-        herr = H5Aread(attr_id, class_id, class_str);
-        H5Tclose(class_id);
+        herr_t herr = H5Aread(attr_id, type_id, class_str);
         if ( herr < 0 ) {
             free(class_str);
             H5Tclose(type_id);
@@ -15718,7 +15695,8 @@ Mat_VarGetStructFieldByIndex(matvar_t *matvar, size_t field_index, size_t index)
     matvar_t *field = NULL;
     size_t nelems = 1, nfields;
 
-    if ( matvar == NULL || matvar->data == NULL || matvar->class_type != MAT_C_STRUCT || matvar->data_size == 0 )
+    if ( matvar == NULL || matvar->data == NULL || matvar->class_type != MAT_C_STRUCT ||
+         matvar->data_size == 0 )
         return NULL;
 
     err = Mat_MulDims(matvar, &nelems);
diff --git a/Modelica/Resources/C-Sources/ModelicaMatIO.h b/Modelica/Resources/C-Sources/ModelicaMatIO.h
index 1e3f8288b6..09edd9dc01 100644
--- a/Modelica/Resources/C-Sources/ModelicaMatIO.h
+++ b/Modelica/Resources/C-Sources/ModelicaMatIO.h
@@ -55,13 +55,13 @@
 #define MATIO_MINOR_VERSION 5
 
 /* Matio release level number */
-#define MATIO_RELEASE_LEVEL 24
+#define MATIO_RELEASE_LEVEL 26
 
 /* Matio version number */
-#define MATIO_VERSION 1524
+#define MATIO_VERSION 1526
 
 /* Matio version string */
-#define MATIO_VERSION_STR "1.5.24"
+#define MATIO_VERSION_STR "1.5.26"
 
 /* Default file format */
 #define MAT_FT_DEFAULT MAT_FT_MAT5