diff --git a/source/blender/windowmanager/WM_types.hh b/source/blender/windowmanager/WM_types.hh
index 612821bb89c..fafe369c275 100644
--- a/source/blender/windowmanager/WM_types.hh
+++ b/source/blender/windowmanager/WM_types.hh
@@ -930,10 +930,10 @@ enum wmConfirmPosition {
 };
 
 struct wmConfirmDetails {
-  char title[1024];
-  char message[1024];
-  char message2[1024];
-  char confirm_text[256];
+  std::string title;
+  std::string message;
+  std::string message2;
+  std::string confirm_text;
   int icon;
   wmConfirmSize size;
   wmConfirmPosition position;
diff --git a/source/blender/windowmanager/intern/wm_files.cc b/source/blender/windowmanager/intern/wm_files.cc
index a084115bb0e..6bc7db47fac 100644
--- a/source/blender/windowmanager/intern/wm_files.cc
+++ b/source/blender/windowmanager/intern/wm_files.cc
@@ -3584,8 +3584,8 @@ static void wm_clear_recent_files_confirm(bContext * /*C*/,
                                           wmOperator * /*op*/,
                                           wmConfirmDetails *confirm)
 {
-  STRNCPY(confirm->message, IFACE_("Remove all items from the recent files list"));
-  STRNCPY(confirm->confirm_text, IFACE_("Remove All"));
+  confirm->message = IFACE_("Remove all items from the recent files list");
+  confirm->confirm_text = IFACE_("Remove All");
   confirm->position = WM_WARNING_POSITION_CENTER;
   confirm->size = WM_WARNING_SIZE_LARGE;
   confirm->cancel_default = true;
diff --git a/source/blender/windowmanager/intern/wm_operators.cc b/source/blender/windowmanager/intern/wm_operators.cc
index ad26cf7501e..1bd70a8f09b 100644
--- a/source/blender/windowmanager/intern/wm_operators.cc
+++ b/source/blender/windowmanager/intern/wm_operators.cc
@@ -1217,8 +1217,8 @@ static uiBlock *wm_block_confirm_create(bContext *C, ARegion *region, void *arg_
 
   wmConfirmDetails confirm = {{0}};
 
-  STRNCPY(confirm.title, WM_operatortype_description(C, op->type, op->ptr).c_str());
-  STRNCPY(confirm.confirm_text, WM_operatortype_name(op->type, op->ptr).c_str());
+  confirm.title = WM_operatortype_description(C, op->type, op->ptr);
+  confirm.confirm_text = WM_operatortype_name(op->type, op->ptr);
   confirm.icon = ALERT_ICON_WARNING;
   confirm.size = WM_WARNING_SIZE_SMALL;
   confirm.position = WM_WARNING_POSITION_MOUSE;
@@ -1245,21 +1245,23 @@ static uiBlock *wm_block_confirm_create(bContext *C, ARegion *region, void *arg_
   const uiStyle *style = UI_style_get_dpi();
   int text_width = std::max(
       120 * UI_SCALE_FAC,
-      BLF_width(style->widget.uifont_id, confirm.title, ARRAY_SIZE(confirm.title)));
-  if (confirm.message[0]) {
-    text_width = std::max(
-        text_width,
-        int(BLF_width(style->widget.uifont_id, confirm.message, ARRAY_SIZE(confirm.message))));
+      BLF_width(style->widget.uifont_id, confirm.title.c_str(), confirm.title.length()));
+  if (!confirm.message.empty()) {
+    text_width = std::max(text_width,
+                          int(BLF_width(style->widget.uifont_id,
+                                        confirm.message.c_str(),
+                                        confirm.message.length())));
   }
-  if (confirm.message2[0]) {
-    text_width = std::max(
-        text_width,
-        int(BLF_width(style->widget.uifont_id, confirm.message2, ARRAY_SIZE(confirm.message2))));
+  if (!confirm.message2.empty()) {
+    text_width = std::max(text_width,
+                          int(BLF_width(style->widget.uifont_id,
+                                        confirm.message2.c_str(),
+                                        confirm.message2.length())));
   }
 
   const bool small = confirm.size == WM_WARNING_SIZE_SMALL;
   const int padding = (small ? 7 : 14) * UI_SCALE_FAC;
-  const short icon_size = (small ? (confirm.message[0] ? 48 : 32) : 64) * UI_SCALE_FAC;
+  const short icon_size = (small ? (confirm.message.empty() ? 32 : 48) : 64) * UI_SCALE_FAC;
   const int dialog_width = icon_size + text_width + (style->columnspace * 2.5);
   const float split_factor = (float)icon_size / (float)(dialog_width - style->columnspace);
 
@@ -1278,17 +1280,19 @@ static uiBlock *wm_block_confirm_create(bContext *C, ARegion *region, void *arg_
   /* The rest of the content on the right. */
   layout = uiLayoutColumn(split_block, true);
 
-  if (confirm.title[0]) {
-    if (!confirm.message[0]) {
+  if (!confirm.title.empty()) {
+    if (confirm.message.empty()) {
       uiItemS(layout);
     }
-    uiItemL_ex(layout, confirm.title, ICON_NONE, true, false);
+    uiItemL_ex(layout, confirm.title.c_str(), ICON_NONE, true, false);
   }
-  if (confirm.message[0]) {
-    uiItemL(layout, confirm.message, ICON_NONE);
+
+  if (!confirm.message.empty()) {
+    uiItemL(layout, confirm.message.c_str(), ICON_NONE);
   }
-  if (confirm.message2[0]) {
-    uiItemL(layout, confirm.message2, ICON_NONE);
+
+  if (!confirm.message2.empty()) {
+    uiItemL(layout, confirm.message2.c_str(), ICON_NONE);
   }
 
   uiItemS_ex(layout, small ? 0.5f : 4.0f);
@@ -1312,7 +1316,7 @@ static uiBlock *wm_block_confirm_create(bContext *C, ARegion *region, void *arg_
                                    UI_BTYPE_BUT,
                                    0,
                                    0,
-                                   confirm.confirm_text,
+                                   confirm.confirm_text.c_str(),
                                    0,
                                    0,
                                    0,
@@ -1348,7 +1352,7 @@ static uiBlock *wm_block_confirm_create(bContext *C, ARegion *region, void *arg_
                                    UI_BTYPE_BUT,
                                    0,
                                    0,
-                                   confirm.confirm_text,
+                                   confirm.confirm_text.c_str(),
                                    0,
                                    0,
                                    0,