1 files changed, 1 insertions, 1 deletions

diff --git a/lib-src/etags.c b/lib-src/etags.c
index 4a10a6c2001..e9fab1be3ee 100644
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -3116,7 +3116,7 @@ consider_token (str, len, c, c_extp, cblev, parlev, is_func_or_var)
               fvdef = vignore;
               return FALSE;
             }
-          if (strneq (str+len-10, "::operator", 10))
+          if (len >= 10 && strneq (str+len-10, "::operator", 10))
             {
               if (*c_extp & C_AUTO) /* automatic detection of C++ */
                 *c_extp = (*c_extp | C_PLPL) & ~C_AUTO;