1 files changed, 1 insertions, 0 deletions
diff --git a/builtin.c b/builtin.c
index 21f295f7..67424663 100644
--- a/builtin.c
+++ b/builtin.c
@@ -3520,6 +3520,7 @@ nondec2awknum(char *str, size_t len)
 	} else {
 decimal:
 		save = str[len];
+		str[len] = '\0';
 		retval = strtod(str, NULL);
 		str[len] = save;
 	}