PR merged https://gitlab.gnome.org/GNOME/dia/-/merge_requests/142.patch
fix compile with >=poppler-26.01
--- a/plug-ins/pdf/pdf-import.cpp
+++ b/plug-ins/pdf/pdf-import.cpp
@@ -904,7 +904,11 @@ DiaOutputDev::drawImage (GfxState         *state,
       unsigned char *pixels = gdk_pixbuf_get_pixels (pixbuf);
       int y;
 
+#if POPPLER_VERSION_MAJOR > 25
+      imgStr.rewind(); // otherwise getLine() is crashing right away
+#else
       imgStr.reset(); // otherwise getLine() is crashing right away
+#endif
       line = imgStr.getLine ();
       for (y = 0; y < height && line; ++y) {
 	unsigned char *dest = pixels + y * rowstride;
-- 
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