1 files changed, 1 insertions, 0 deletions
diff --git a/Modules/sre.h b/Modules/sre.h
index d4af05c045..518c11db30 100644
--- a/Modules/sre.h
+++ b/Modules/sre.h
@@ -30,6 +30,7 @@ typedef struct {
     PyObject* pattern; /* pattern source (or None) */
     int flags; /* flags used when compiling pattern source */
     PyObject *weakreflist; /* List of weak references */
+	int charsize; /* pattern charsize (or -1) */
     /* pattern code */
     Py_ssize_t codesize;
     SRE_CODE code[1];