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-rw-r--r--Modules/binascii.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/Modules/binascii.c b/Modules/binascii.c
index 4ddea56..643450c 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -135,7 +135,9 @@ static char table_a2b_base64[] = {
};
#define BASE64_PAD '='
-#define BASE64_MAXBIN 57 /* Max binary chunk size (76 char line) */
+
+/* Max binary chunk size; limited only by available memory */
+#define BASE64_MAXBIN (INT_MAX/2 - sizeof(PyStringObject))
static unsigned char table_b2a_base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";