gh-129409: Fix Integer overflow - SEGV while writing data more than 2GB in CSV file (#129413)

2025-01-29 16:45:47 +05:30
parent 4815131910
commit 97b0ef05d9
2 changed files with 3 additions and 1 deletions
--- a/Misc/NEWS.d/next/Library/2025-01-29-14-30-54.gh-issue-129409.JZbOE6.rst
+++ b/Misc/NEWS.d/next/Library/2025-01-29-14-30-54.gh-issue-129409.JZbOE6.rst
@@ -0,0 +1,2 @@
+Fix an integer overflow in the :mod:`csv` module when writing a data field
+larger than 2GB.
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -1138,7 +1138,7 @@ join_append_data(WriterObj *self, int field_kind, const void *field_data,
                 int copy_phase)
 {
    DialectObj *dialect = self->dialect;
-    int i;
+    Py_ssize_t i;
    Py_ssize_t rec_len;

 #define INCLEN \