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Commit93ab55b

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[3.14]gh-132775: Use _PyFunction_VerifyStateless() and _PyCode_VerifyStateless() (gh-134465)
(cherry picked from commita66bae8, AKAgh-134439)Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
1 parent11d77d2 commit93ab55b

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3 files changed

+70
-76
lines changed

3 files changed

+70
-76
lines changed

‎Include/internal/pycore_pyerrors.h

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -94,13 +94,13 @@ extern void _PyErr_Fetch(
9494
PyObject**value,
9595
PyObject**traceback);
9696

97-
externPyObject*_PyErr_GetRaisedException(PyThreadState*tstate);
97+
PyAPI_FUNC(PyObject*)_PyErr_GetRaisedException(PyThreadState*tstate);
9898

9999
PyAPI_FUNC(int)_PyErr_ExceptionMatches(
100100
PyThreadState*tstate,
101101
PyObject*exc);
102102

103-
externvoid_PyErr_SetRaisedException(PyThreadState*tstate,PyObject*exc);
103+
PyAPI_FUNC(void)_PyErr_SetRaisedException(PyThreadState*tstate,PyObject*exc);
104104

105105
externvoid_PyErr_Restore(
106106
PyThreadState*tstate,

‎Lib/test/test__interpreters.py

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1054,7 +1054,7 @@ def test_closure(self):
10541054
defscript():
10551055
assertspam
10561056

1057-
withself.assertRaises(ValueError):
1057+
withself.assertRaises(TypeError):
10581058
_interpreters.run_func(self.id,script)
10591059

10601060
# XXX This hasn't been fixed yet.
@@ -1065,6 +1065,7 @@ def script():
10651065
withself.assertRaises(ValueError):
10661066
_interpreters.run_func(self.id,script)
10671067

1068+
@unittest.skip("we're not quite there yet")
10681069
deftest_args(self):
10691070
withself.subTest('args'):
10701071
defscript(a,b=0):

‎Modules/_interpretersmodule.c

Lines changed: 66 additions & 73 deletions
Original file line numberDiff line numberDiff line change
@@ -8,6 +8,8 @@
88
#include"Python.h"
99
#include"pycore_code.h"// _PyCode_HAS_EXECUTORS()
1010
#include"pycore_crossinterp.h"// _PyXIData_t
11+
#include"pycore_pyerrors.h"// _PyErr_GetRaisedException()
12+
#include"pycore_function.h"// _PyFunction_VerifyStateless()
1113
#include"pycore_interp.h"// _PyInterpreterState_IDIncref()
1214
#include"pycore_modsupport.h"// _PyArg_BadArgument()
1315
#include"pycore_namespace.h"// _PyNamespace_New()
@@ -374,34 +376,17 @@ check_code_str(PyUnicodeObject *text)
374376
returnNULL;
375377
}
376378

377-
staticconstchar*
378-
check_code_object(PyCodeObject*code)
379+
#ifndefNDEBUG
380+
staticint
381+
code_has_args(PyCodeObject*code)
379382
{
380383
assert(code!=NULL);
381-
if (code->co_argcount>0
384+
return (code->co_argcount>0
382385
||code->co_posonlyargcount>0
383386
||code->co_kwonlyargcount>0
384-
||code->co_flags& (CO_VARARGS |CO_VARKEYWORDS))
385-
{
386-
return"arguments not supported";
387-
}
388-
if (code->co_ncellvars>0) {
389-
return"closures not supported";
390-
}
391-
// We trust that no code objects under co_consts have unbound cell vars.
392-
393-
if (_PyCode_HAS_EXECUTORS(code)||_PyCode_HAS_INSTRUMENTATION(code)) {
394-
return"only basic functions are supported";
395-
}
396-
if (code->_co_monitoring!=NULL) {
397-
return"only basic functions are supported";
398-
}
399-
if (code->co_extra!=NULL) {
400-
return"only basic functions are supported";
401-
}
402-
403-
returnNULL;
387+
||code->co_flags& (CO_VARARGS |CO_VARKEYWORDS));
404388
}
389+
#endif
405390

406391
#defineRUN_TEXT 1
407392
#defineRUN_CODE 2
@@ -429,8 +414,10 @@ get_code_str(PyObject *arg, Py_ssize_t *len_p, PyObject **bytes_p, int *flags_p)
429414
flags=RUN_TEXT;
430415
}
431416
else {
432-
assert(PyCode_Check(arg)
433-
&& (check_code_object((PyCodeObject*)arg)==NULL));
417+
assert(PyCode_Check(arg));
418+
assert(_PyCode_VerifyStateless(
419+
PyThreadState_Get(), (PyCodeObject*)arg,NULL,NULL,NULL)==0);
420+
assert(!code_has_args((PyCodeObject*)arg));
434421
flags=RUN_CODE;
435422

436423
// Serialize the code object.
@@ -949,7 +936,8 @@ Bind the given attributes in the interpreter's __main__ module.");
949936

950937

951938
staticPyUnicodeObject*
952-
convert_script_arg(PyObject*arg,constchar*fname,constchar*displayname,
939+
convert_script_arg(PyThreadState*tstate,
940+
PyObject*arg,constchar*fname,constchar*displayname,
953941
constchar*expected)
954942
{
955943
PyUnicodeObject*str=NULL;
@@ -968,60 +956,53 @@ convert_script_arg(PyObject *arg, const char *fname, const char *displayname,
968956
constchar*err=check_code_str(str);
969957
if (err!=NULL) {
970958
Py_DECREF(str);
971-
PyErr_Format(PyExc_ValueError,
972-
"%.200s(): bad script text (%s)",fname,err);
959+
_PyErr_Format(tstate,PyExc_ValueError,
960+
"%.200s(): bad script text (%s)",fname,err);
973961
returnNULL;
974962
}
975963

976964
returnstr;
977965
}
978966

979967
staticPyCodeObject*
980-
convert_code_arg(PyObject*arg,constchar*fname,constchar*displayname,
968+
convert_code_arg(PyThreadState*tstate,
969+
PyObject*arg,constchar*fname,constchar*displayname,
981970
constchar*expected)
982971
{
983-
constchar*kind=NULL;
972+
PyObject*cause;
984973
PyCodeObject*code=NULL;
985974
if (PyFunction_Check(arg)) {
986-
if (PyFunction_GetClosure(arg)!=NULL) {
987-
PyErr_Format(PyExc_ValueError,
988-
"%.200s(): closures not supported",fname);
989-
returnNULL;
990-
}
991-
code= (PyCodeObject*)PyFunction_GetCode(arg);
992-
if (code==NULL) {
993-
if (PyErr_Occurred()) {
994-
// This chains.
995-
PyErr_Format(PyExc_ValueError,
996-
"%.200s(): bad func",fname);
997-
}
998-
else {
999-
PyErr_Format(PyExc_ValueError,
1000-
"%.200s(): func.__code__ missing",fname);
1001-
}
1002-
returnNULL;
975+
// For now we allow globals, so we can't use
976+
// _PyFunction_VerifyStateless().
977+
PyObject*codeobj=PyFunction_GetCode(arg);
978+
if (_PyCode_VerifyStateless(
979+
tstate, (PyCodeObject*)codeobj,NULL,NULL,NULL)<0) {
980+
gotochained;
1003981
}
1004-
Py_INCREF(code);
1005-
kind="func";
982+
code= (PyCodeObject*)Py_NewRef(codeobj);
1006983
}
1007984
elseif (PyCode_Check(arg)) {
985+
if (_PyCode_VerifyStateless(
986+
tstate, (PyCodeObject*)arg,NULL,NULL,NULL)<0) {
987+
gotochained;
988+
}
1008989
code= (PyCodeObject*)Py_NewRef(arg);
1009-
kind="code object";
1010990
}
1011991
else {
1012992
_PyArg_BadArgument(fname,displayname,expected,arg);
1013993
returnNULL;
1014994
}
1015995

1016-
constchar*err=check_code_object(code);
1017-
if (err!=NULL) {
1018-
Py_DECREF(code);
1019-
PyErr_Format(PyExc_ValueError,
1020-
"%.200s(): bad %s (%s)",fname,kind,err);
1021-
returnNULL;
1022-
}
1023-
1024996
returncode;
997+
998+
chained:
999+
cause=_PyErr_GetRaisedException(tstate);
1000+
assert(cause!=NULL);
1001+
_PyArg_BadArgument(fname,displayname,expected,arg);
1002+
PyObject*exc=_PyErr_GetRaisedException(tstate);
1003+
PyException_SetCause(exc,cause);
1004+
_PyErr_SetRaisedException(tstate,exc);
1005+
returnNULL;
10251006
}
10261007

10271008
staticint
@@ -1057,12 +1038,14 @@ _interp_exec(PyObject *self, PyInterpreterState *interp,
10571038
staticPyObject*
10581039
interp_exec(PyObject*self,PyObject*args,PyObject*kwds)
10591040
{
1041+
#defineFUNCNAME MODULE_NAME_STR ".exec"
1042+
PyThreadState*tstate=_PyThreadState_GET();
10601043
staticchar*kwlist[]= {"id","code","shared","restrict",NULL};
10611044
PyObject*id,*code;
10621045
PyObject*shared=NULL;
10631046
intrestricted=0;
10641047
if (!PyArg_ParseTupleAndKeywords(args,kwds,
1065-
"OO|O$p:"MODULE_NAME_STR".exec",kwlist,
1048+
"OO|O$p:"FUNCNAME,kwlist,
10661049
&id,&code,&shared,&restricted))
10671050
{
10681051
returnNULL;
@@ -1077,12 +1060,12 @@ interp_exec(PyObject *self, PyObject *args, PyObject *kwds)
10771060

10781061
constchar*expected="a string, a function, or a code object";
10791062
if (PyUnicode_Check(code)) {
1080-
code= (PyObject*)convert_script_arg(code,MODULE_NAME_STR".exec",
1081-
"argument 2",expected);
1063+
code= (PyObject*)convert_script_arg(tstate,code,FUNCNAME,
1064+
"argument 2",expected);
10821065
}
10831066
else {
1084-
code= (PyObject*)convert_code_arg(code,MODULE_NAME_STR".exec",
1085-
"argument 2",expected);
1067+
code= (PyObject*)convert_code_arg(tstate,code,FUNCNAME,
1068+
"argument 2",expected);
10861069
}
10871070
if (code==NULL) {
10881071
returnNULL;
@@ -1096,6 +1079,7 @@ interp_exec(PyObject *self, PyObject *args, PyObject *kwds)
10961079
returnexcinfo;
10971080
}
10981081
Py_RETURN_NONE;
1082+
#undef FUNCNAME
10991083
}
11001084

11011085
PyDoc_STRVAR(exec_doc,
@@ -1118,13 +1102,15 @@ is ignored, including its __globals__ dict.");
11181102
staticPyObject*
11191103
interp_run_string(PyObject*self,PyObject*args,PyObject*kwds)
11201104
{
1105+
#defineFUNCNAME MODULE_NAME_STR ".run_string"
1106+
PyThreadState*tstate=_PyThreadState_GET();
11211107
staticchar*kwlist[]= {"id","script","shared","restrict",NULL};
11221108
PyObject*id,*script;
11231109
PyObject*shared=NULL;
11241110
intrestricted=0;
11251111
if (!PyArg_ParseTupleAndKeywords(args,kwds,
1126-
"OU|O$p:"MODULE_NAME_STR".run_string",
1127-
kwlist,&id,&script,&shared,&restricted))
1112+
"OU|O$p:"FUNCNAME,kwlist,
1113+
&id,&script,&shared,&restricted))
11281114
{
11291115
returnNULL;
11301116
}
@@ -1136,7 +1122,7 @@ interp_run_string(PyObject *self, PyObject *args, PyObject *kwds)
11361122
returnNULL;
11371123
}
11381124

1139-
script= (PyObject*)convert_script_arg(script,MODULE_NAME_STR".run_string",
1125+
script= (PyObject*)convert_script_arg(tstate,script,FUNCNAME,
11401126
"argument 2","a string");
11411127
if (script==NULL) {
11421128
returnNULL;
@@ -1150,6 +1136,7 @@ interp_run_string(PyObject *self, PyObject *args, PyObject *kwds)
11501136
returnexcinfo;
11511137
}
11521138
Py_RETURN_NONE;
1139+
#undef FUNCNAME
11531140
}
11541141

11551142
PyDoc_STRVAR(run_string_doc,
@@ -1162,13 +1149,15 @@ Execute the provided string in the identified interpreter.\n\
11621149
staticPyObject*
11631150
interp_run_func(PyObject*self,PyObject*args,PyObject*kwds)
11641151
{
1152+
#defineFUNCNAME MODULE_NAME_STR ".run_func"
1153+
PyThreadState*tstate=_PyThreadState_GET();
11651154
staticchar*kwlist[]= {"id","func","shared","restrict",NULL};
11661155
PyObject*id,*func;
11671156
PyObject*shared=NULL;
11681157
intrestricted=0;
11691158
if (!PyArg_ParseTupleAndKeywords(args,kwds,
1170-
"OO|O$p:"MODULE_NAME_STR".run_func",
1171-
kwlist,&id,&func,&shared,&restricted))
1159+
"OO|O$p:"FUNCNAME,kwlist,
1160+
&id,&func,&shared,&restricted))
11721161
{
11731162
returnNULL;
11741163
}
@@ -1180,7 +1169,7 @@ interp_run_func(PyObject *self, PyObject *args, PyObject *kwds)
11801169
returnNULL;
11811170
}
11821171

1183-
PyCodeObject*code=convert_code_arg(func,MODULE_NAME_STR".exec",
1172+
PyCodeObject*code=convert_code_arg(tstate,func,FUNCNAME,
11841173
"argument 2",
11851174
"a function or a code object");
11861175
if (code==NULL) {
@@ -1195,6 +1184,7 @@ interp_run_func(PyObject *self, PyObject *args, PyObject *kwds)
11951184
returnexcinfo;
11961185
}
11971186
Py_RETURN_NONE;
1187+
#undef FUNCNAME
11981188
}
11991189

12001190
PyDoc_STRVAR(run_func_doc,
@@ -1209,14 +1199,16 @@ are not supported. Methods and other callables are not supported either.\n\
12091199
staticPyObject*
12101200
interp_call(PyObject*self,PyObject*args,PyObject*kwds)
12111201
{
1202+
#defineFUNCNAME MODULE_NAME_STR ".call"
1203+
PyThreadState*tstate=_PyThreadState_GET();
12121204
staticchar*kwlist[]= {"id","callable","args","kwargs",
12131205
"restrict",NULL};
12141206
PyObject*id,*callable;
12151207
PyObject*args_obj=NULL;
12161208
PyObject*kwargs_obj=NULL;
12171209
intrestricted=0;
12181210
if (!PyArg_ParseTupleAndKeywords(args,kwds,
1219-
"OO|OO$p:"MODULE_NAME_STR".call",kwlist,
1211+
"OO|OO$p:"FUNCNAME,kwlist,
12201212
&id,&callable,&args_obj,&kwargs_obj,
12211213
&restricted))
12221214
{
@@ -1231,15 +1223,15 @@ interp_call(PyObject *self, PyObject *args, PyObject *kwds)
12311223
}
12321224

12331225
if (args_obj!=NULL) {
1234-
PyErr_SetString(PyExc_ValueError,"got unexpected args");
1226+
_PyErr_SetString(tstate,PyExc_ValueError,"got unexpected args");
12351227
returnNULL;
12361228
}
12371229
if (kwargs_obj!=NULL) {
1238-
PyErr_SetString(PyExc_ValueError,"got unexpected kwargs");
1230+
_PyErr_SetString(tstate,PyExc_ValueError,"got unexpected kwargs");
12391231
returnNULL;
12401232
}
12411233

1242-
PyObject*code= (PyObject*)convert_code_arg(callable,MODULE_NAME_STR".call",
1234+
PyObject*code= (PyObject*)convert_code_arg(tstate,callable,FUNCNAME,
12431235
"argument 2","a function");
12441236
if (code==NULL) {
12451237
returnNULL;
@@ -1253,6 +1245,7 @@ interp_call(PyObject *self, PyObject *args, PyObject *kwds)
12531245
returnexcinfo;
12541246
}
12551247
Py_RETURN_NONE;
1248+
#undef FUNCNAME
12561249
}
12571250

12581251
PyDoc_STRVAR(call_doc,

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