https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9635

diff --git a/MagickCore/fx.c b/MagickCore/fx.c
index dedad147583c9fa1fa3d290b86c5a9335e3a6f96..518f4da0040b8243e8d249689919cdd49e950a41 100644 (file)
--- a/MagickCore/fx.c
+++ b/MagickCore/fx.c
@@ -2935,7 +2935,7 @@ static double FxEvaluateSubexpression(FxInfo *fx_info,
     case 'W':
     case 'w':
     {
-      if (LocaleNCompare(expression,"while",5) == 0)
+      if (LocaleNCompare(expression,"while(",6) == 0)
         {
           do
           {