8000 bpo-46841: Don't jump during `throw()` by brandtbucher · Pull Request #31968 · python/cpython · GitHub
[go: up one dir, main page]
Skip to content

bpo-46841: Don't jump during throw() #31968

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 8 commits into from
Closed

bpo-46841: Don't jump during throw() #31968

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
6ee3f38
Handle return-during-throw in SEND
brandtbucher Mar 17, 2022
dcf97b2
Update the docs for SEND
brandtbucher Mar 17, 2022
fb649c7
blurb add
brandtbucher Mar 17, 2022
acdf984
Clean things up a bit
brandtbucher Mar 17, 2022
4d30025
Catch up with main
brandtbucher Apr 6, 2022
f3d7fbe
Catch up with main
brandtbucher May 6, 2022
67a63b2
Catch up with main
brandtbucher Jun 8, 2022
5aebc87
Minor doc edits
brandtbucher Jun 8, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Next Next commit
Handle return-during-throw in SEND
  • Loading branch information
@brandtbucher
brandtbucher committed Mar 17, 2022
commit 6ee3f3814f17c72b96c424873de64a4602d9788a
11 changes: 2 additions & 9 deletions Objects/genobject.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -485,15 +485,8 @@ _gen_throw(PyGenObject *gen, int close_on_genexit,
ret = _PyFrame_StackPop((_PyInterpreterFrame *)gen->gi_iframe);
assert(ret == yf);
Py_DECREF(ret);
/* Termination repetition of SEND loop */
assert(frame->f_lasti >= 0);
PyObject *bytecode = gen->gi_code->co_code;
unsigned char *code = (unsigned char *)PyBytes_AS_STRING(bytecode);
/* Backup to SEND */
frame->f_lasti--;
assert(code[frame->f_lasti*sizeof(_Py_CODEUNIT)] == SEND);
int jump = code[frame->f_lasti*sizeof(_Py_CODEUNIT)+1];
frame->f_lasti += jump;
// NULL tells SEND to quit sending:
_PyFrame_StackPush((_PyInterpreterFrame *)gen->gi_iframe, NULL);
if (_PyGen_FetchStopIterationValue(&val) == 0) {
ret = gen_send(gen, val);
Py_DECREF(val);
Expand Down
7 changes: 7 additions & 0 deletions Python/ceval.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2535,6 +2535,13 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
assert(STACK_LEVEL() >= 2);
PyObject *v = POP();
PyObject *receiver = TOP();
if (receiver == NULL) {
// Receiver completed during a throw() call. v is the return
// value:
SET_TOP(v);
JUMPBY(oparg);
DISPATCH();
}
PySendResult gen_status;
PyObject *retval;
if (tstate->c_tracefunc == NULL) {
Expand Down
0