rb_str_resize: Only clear coderange on truncation

If we are expanding the string or only stripping extra capacity
then coderange won't change, so clearing it is wasteful.

1 files changed, 3 insertions, 0 deletions

diff --git a/file.c b/file.c
index 5265d3a3a5..92338bb754 100644
--- a/file.c
+++ b/file.c
@@ -4090,6 +4090,9 @@ static VALUE
 str_shrink(VALUE str)
 {
     rb_str_resize(str, RSTRING_LEN(str));
+    // expand_path on Windows can sometimes mutate the string
+    // without clearing its coderange
+    ENC_CODERANGE_CLEAR(str);
     return str;
 }