Issue #1160: Fix compiling large regular expressions on UCS2 builds.
Patch by Serhiy Storchaka.
diff --git a/Modules/_sre.c b/Modules/_sre.c
index 472b5a3..9600a08 100644
--- a/Modules/_sre.c
+++ b/Modules/_sre.c
@@ -2695,6 +2695,13 @@
for (i = 0; i < n; i++) {
PyObject *o = PyList_GET_ITEM(code, i);
unsigned long value = PyLong_AsUnsignedLong(o);
+ if (value == (unsigned long)-1 && PyErr_Occurred()) {
+ if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
+ PyErr_SetString(PyExc_OverflowError,
+ "regular expression code size limit exceeded");
+ }
+ break;
+ }
self->code[i] = (SRE_CODE) value;
if ((unsigned long) self->code[i] != value) {
PyErr_SetString(PyExc_OverflowError,
@@ -3065,10 +3072,8 @@
GET_ARG; max = arg;
if (min > max)
FAIL;
-#ifdef Py_UNICODE_WIDE
if (max > 65535)
FAIL;
-#endif
if (!_validate_inner(code, code+skip-4, groups))
FAIL;
code += skip-4;
@@ -3086,10 +3091,8 @@
GET_ARG; max = arg;
if (min > max)
FAIL;
-#ifdef Py_UNICODE_WIDE
if (max > 65535)
FAIL;
-#endif
if (!_validate_inner(code, code+skip-3, groups))
FAIL;
code += skip-3;
diff --git a/Modules/sre.h b/Modules/sre.h
index aec9b54..d389b46 100644
--- a/Modules/sre.h
+++ b/Modules/sre.h
@@ -14,12 +14,8 @@
#include "sre_constants.h"
/* size of a code word (must be unsigned short or larger, and
- large enough to hold a Py_UNICODE character) */
-#ifdef Py_UNICODE_WIDE
+ large enough to hold a UCS4 character) */
#define SRE_CODE Py_UCS4
-#else
-#define SRE_CODE unsigned short
-#endif
typedef struct {
PyObject_VAR_HEAD