Fix Issue #182

Author: thelfer

docs/web/CMakeLists.txt

@@ -69,6 +69,7 @@ if(MGIS_HAVE_PANDOC)
   mgis_pandoc_generate_html_page(release-notes-1.0.2 "--toc" "--toc-depth=3")
   mgis_pandoc_generate_html_page(release-notes-1.1 "--toc" "--toc-depth=3")
   mgis_pandoc_generate_html_page(release-notes-1.1.1 "--toc" "--toc-depth=3")
+  mgis_pandoc_generate_html_page(release-notes-1.1.2 "--toc" "--toc-depth=3")
   mgis_pandoc_generate_html_page(release-notes-1.2 "--toc" "--toc-depth=3")
   mgis_pandoc_generate_html_page(release-notes-1.2.1 "--number-sections" "--toc" "--toc-depth=3")
   mgis_pandoc_generate_html_page(release-notes-1.2.2 "--number-sections" "--toc" "--toc-depth=3")

docs/web/mgis-template.html

@@ -88,6 +88,7 @@
 		  <ul>
 		    <li><a href="release-notes-1.1.html">Version 1.1</a></li>
 		    <li><a href="release-notes-1.1.1.html">Version 1.1.1</a></li>
+		    <li><a href="release-notes-1.1.2.html">Version 1.1.2</a></li>
 		  </ul>
 		</li>
 		<li><a>Version 1.2.x</a>

docs/web/release-notes-1.1.2.md

@@ -0,0 +1,25 @@
+---
+title: MFrontGenericInterfaceSupport Version 1.1.2
+author: Thomas Helfer
+date: 2025
+lang: en-EN
+numbersections: true
+documentclass: article
+from: markdown+tex_math_single_backslash
+geometry:
+  - margin=2cm
+papersize: a4
+link-citations: true
+colorlinks: true
+figPrefixTemplate: "$$i$$"
+tabPrefixTemplate: "$$i$$"
+secPrefixTemplate: "$$i$$"
+eqnPrefixTemplate: "($$i$$)"
+bibliography: bibliography.bib
+---
+
+# Issues fixed
+
+## Issue #182: `mgis::behaviour::update` does not handle the case when a multi-components material property or external state variable has been initialized by uniform values and is updated by non-uniform values
+
+For more details, see <https://github.com/thelfer/MFrontGenericInterfaceSupport/issues/182>.

src/MaterialStateManager.cxx

@@ -303,8 +303,8 @@ namespace mgis::behaviour {
       std::copy(from.begin(), from.end(), to.begin());
     };  // end update_span
     auto update_field_holder =
-        [&check_size](MaterialStateManager::FieldHolder& to,
-                      const MaterialStateManager::FieldHolder& from) {
+        [&o, &check_size](MaterialStateManager::FieldHolder& to,
+                          const MaterialStateManager::FieldHolder& from) {
           if (std::holds_alternative<mgis::real>(from)) {
             to = std::get<mgis::real>(from);
           } else if (std::holds_alternative<std::vector<mgis::real>>(from)) {
@@ -317,6 +317,11 @@ namespace mgis::behaviour {
             } else if (std::holds_alternative<std::vector<mgis::real>>(to)) {
               // reuse existing memory
               auto& to_v = std::get<std::vector<mgis::real>>(to);
+              if (to_v.size() != from_v.size()) {
+                if (to_v.size() * o.n == from_v.size()) {
+                  to_v.resize(from_v.size());
+                }
+              }
               check_size(from_v.size(), to_v.size());
               std::copy(from_v.begin(), from_v.end(), to_v.begin());
             } else {
@@ -332,7 +337,12 @@ namespace mgis::behaviour {
               std::copy(from_v.begin(), from_v.end(), to_v.begin());
             } else if (std::holds_alternative<std::vector<mgis::real>>(to)) {
               // reuse existing memory
-              auto to_v = std::get<std::vector<mgis::real>>(to);
+              auto& to_v = std::get<std::vector<mgis::real>>(to);
+              if (to_v.size() != from_v.size()) {
+                if (to_v.size() * o.n == from_v.size()) {
+                  to_v.resize(from_v.size());
+                }
+              }
               check_size(from_v.size(), to_v.size());
               std::copy(from_v.begin(), from_v.end(), to_v.begin());
             } else {