exec_file crash on Debug mode (Win 10)

リポジトリのファイルやテストは指定されていません。指定された Windows 10、VS2019、VC142、Python 3.10 のデバッグ環境でクラッシュを再現し、その後、PyRun_File を使用する失敗する exec_file パスと、動作する PyRun_SimpleFile および _Py_fopen_obj パスを比較します。完了条件は、報告されたクラッシュなしでデバッグモードの embedding.py を実行できることです。

I face a crash on build 1.78 of boost python, on Windows 10, VS2019, VC142, Python 3.10 only on debug mode. Here is the script

#ifdef _DEBUG

#undef _DEBUG

#endif
#define PY_SSIZE_T_CLEAN
#include <Python.h>
int main(int argc, char* argv[])
{
	Py_Initialize();
	char* f = const_cast<char*>("E:\\Projects\\TestBoostPython\\embedding.py");
	PyObject* fo = Py_BuildValue("s", f);
	PyObject* fb = Py_None;
	PyUnicode_FSConverter(fo, &fb);
	char* f_as_uft = PyBytes_AsString(fb);
	FILE* fs = fopen(f_as_uft, "r+");
	Py_DECREF(fo);
	Py_DECREF(fb);
	PyObject* result = PyRun_File(fs,
		f,
		Py_file_input,
		nullptr, nullptr);
	fclose(fs);
	Py_FinalizeEx();
	return 0;
}

which is exactly the exec_file of boost python.

The call stack is

	ucrtbase.dll!_invoke_watson()	Unknown
 	ucrtbase.dll!_invalid_parameter()	Unknown
 	ucrtbase.dll!_invalid_parameter_noinfo()	Unknown
 	ucrtbase.dll!_read()	Unknown
 	ucrtbase.dll!common_refill_and_read_nolock<char>()	Unknown
 	ucrtbase.dll!fgetc()	Unknown
	python310.dll!check_bom(int(*)(tok_state *) get_char, void(*)(int, tok_state *) unget_char, int(*)(tok_state *, const char *) tok, tok_state *) Line 267	C
 	python310.dll!tok_underflow_file(tok_state * tok) Line 944	C
 	[Inline Frame] python310.dll!tok_nextc(tok_state *) Line 1042	C
 	python310.dll!tok_get(tok_state * tok, const char * * p_start, const char * * p_end) Line 1366	C
 	[Inline Frame] python310.dll!PyTokenizer_Get(tok_state * tok, const char * *) Line 2053	C
 	python310.dll!_PyPegen_fill_token(Parser * p) Line 745	C
 	[Inline Frame] python310.dll!_PyPegen_expect_token(Parser *) Line 900	C
 	[Inline Frame] python310.dll!_tmp_15_rule(Parser *) Line 22816	C
 	[Inline Frame] python310.dll!_PyPegen_lookahead(int) Line 891	C
 	python310.dll!compound_stmt_rule(Parser * p) Line 2145	C
 	[Inline Frame] python310.dll!statement_rule(Parser *) Line 1490	C
 	[Inline Frame] python310.dll!_loop1_11_rule(Parser *) Line 22574	C
 	[Inline Frame] python310.dll!statements_rule(Parser *) Line 1446	C
 	python310.dll!file_rule(Parser * p) Line 957	C
 	python310.dll!_PyPegen_parse(Parser * p) Line 34511	C
 	python310.dll!_PyPegen_run_parser(Parser * p) Line 1325	C
 	[Inline Frame] python310.dll!_PyPegen_run_parser_from_file_pointer(_iobuf *) Line 1423	C
 	python310.dll!_PyParser_ASTFromFile(_iobuf * fp, _object * filename_ob, const char * enc, int mode, const char * ps1, const char * ps2, PyCompilerFlags * flags, int * errcode, _arena * arena) Line 26	C
 	python310.dll!pyrun_file(_iobuf * fp, _object * filename, int start, _object * globals, _object * locals, int closeit, PyCompilerFlags * flags) Line 1199	C
 	python310.dll!PyRun_FileExFlags(_iobuf * fp, const char * filename, int start, _object * globals, _object * locals, int closeit, PyCompilerFlags * flags) Line 1230	C

However the following code runs smoothly on the same environment

#ifdef _DEBUG
#undef _DEBUG
#endif

#define PY_SSIZE_T_CLEAN
#include <Python.h>

int main(int argc, char* argv[])
{
	Py_Initialize();
	char* f = const_cast<char*>("E:\\Projects\\TestBoostPython\\embedding.py");
	PyObject* obj = Py_BuildValue("s", f);
	FILE* file = _Py_fopen_obj(obj, "r+");
	if (file != NULL) {
		PyRun_SimpleFile(file, f);
	}
	Py_Finalize();
}