bpo-25083: Python can sometimes create incorrect .pyc files (GH-8449)
Python 2 never checked for I/O error when reading .py files and
thus could mistake an I/O error for EOF and create incorrect .pyc
files.
This adds an check for this and aborts on an error.
diff --git a/Include/errcode.h b/Include/errcode.h
index becec80..5c5a0f7 100644
--- a/Include/errcode.h
+++ b/Include/errcode.h
@@ -29,6 +29,7 @@
#define E_EOFS 23 /* EOF in triple-quoted string */
#define E_EOLS 24 /* EOL in single-quoted string */
#define E_LINECONT 25 /* Unexpected characters after a line continuation */
+#define E_IO 26 /* I/O error */
#ifdef __cplusplus
}