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Commit67a1d27

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gh-102192: Replace PyErr_Fetch/Restore etc by more efficient alternatives
1 parentbb396ee commit67a1d27

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‎Python/traceback.c

Lines changed: 10 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,7 @@
1111
#include"pycore_interp.h"// PyInterpreterState.gc
1212
#include"pycore_parser.h"// _PyParser_ASTFromString
1313
#include"pycore_pyarena.h"// _PyArena_Free()
14-
#include"pycore_pyerrors.h"//_PyErr_Fetch()
14+
#include"pycore_pyerrors.h"//_PyErr_GetRaisedException()
1515
#include"pycore_pystate.h"// _PyThreadState_GET()
1616
#include"pycore_traceback.h"// EXCEPTION_TB_HEADER
1717

@@ -242,17 +242,18 @@ _PyTraceBack_FromFrame(PyObject *tb_next, PyFrameObject *frame)
242242
int
243243
PyTraceBack_Here(PyFrameObject*frame)
244244
{
245-
PyObject*exc,*val,*tb,*newtb;
246-
PyErr_Fetch(&exc,&val,&tb);
247-
newtb=_PyTraceBack_FromFrame(tb,frame);
245+
PyObject*exc=PyErr_GetRaisedException();
246+
assert(PyExceptionInstance_Check(exc));
247+
PyObject*tb=PyException_GetTraceback(exc);
248+
PyObject*newtb=_PyTraceBack_FromFrame(tb,frame);
249+
Py_XDECREF(tb);
248250
if (newtb==NULL) {
249-
_PyErr_ChainExceptions(exc,val,tb);
251+
_PyErr_ChainExceptions1(exc);
250252
return-1;
251253
}
252-
assert(PyExceptionInstance_Check(val));
253-
PyException_SetTraceback(val,newtb);
254-
PyErr_Restore(exc,val,newtb);
255-
Py_XDECREF(tb);
254+
PyException_SetTraceback(exc,newtb);
255+
Py_XDECREF(newtb);
256+
PyErr_SetRaisedException(exc);
256257
return0;
257258
}
258259

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