1 files changed, 3 insertions, 2 deletions

diff --git a/src/xfns.c b/src/xfns.c
index d610c839bfc..67db461a379 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -3917,11 +3917,12 @@ xic_string_conversion_callback (XIC ic, XPointer client_data,
   return;
 
  failure:
-  /* Return a string of length 0 using the C library malloc.  This
+  /* Return a string of length 0 using the C library malloc (1)
+     (not malloc (0), to pacify gcc -Walloc-size).  This
      assumes XFree is able to free data allocated with our malloc
      wrapper.  */
   call_data->text->length = 0;
-  call_data->text->string.mbs = malloc (0);
+  call_data->text->string.mbs = malloc (1);
 }
 
 #endif /* HAVE_X_I18N */