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PiperOrigin-RevId: 640274267
diff --git a/src/hunspell/suggestmgr.cxx b/src/hunspell/suggestmgr.cxx
index 0b3d441..36bf4b9 100644
--- a/src/hunspell/suggestmgr.cxx
+++ b/src/hunspell/suggestmgr.cxx
@@ -1969,6 +1969,10 @@
     m = strlen(s);
     n = strlen(s2);
   }
+  if (m <= 0 || n <= 0) {
+    *result = NULL;
+    return;
+  }
   c = (char *) malloc((m + 1) * (n + 1));
   b = (char *) malloc((m + 1) * (n + 1));
   if (!c || !b) {