1 files changed, 1 insertions, 2 deletions

diff --git a/src/data.c b/src/data.c
index 4c6f7fe3eae..f5942a84da1 100644
--- a/src/data.c
+++ b/src/data.c
@@ -2179,10 +2179,9 @@ bool-vector.  IDX starts at 0.  */)
             {
               /* We must relocate the string data.  */
               ptrdiff_t nchars = SCHARS (array);
-              unsigned char *str;
               USE_SAFE_ALLOCA;
+              unsigned char *str = SAFE_ALLOCA (nbytes);
 
-              SAFE_ALLOCA (str, unsigned char *, nbytes);
               memcpy (str, SDATA (array), nbytes);
               allocate_string_data (XSTRING (array), nchars,
                                     nbytes + new_bytes - prev_bytes);