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bpo-44113: Update __xxtestfuzz not to use Py_SetProgramName #26083

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Merged
merged 5 commits into from
May 12, 2021
Merged

bpo-44113: Update __xxtestfuzz not to use Py_SetProgramName #26083

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40d9ff6
bpo-44113: Update __xxtestfuzz not to use Py_SetProgramName
corona10 May 12, 2021
0ddd410
bpo-44113: Update
corona10 May 12, 2021
acab08b
bpo-44113: Add assert
corona10 May 12, 2021
ed2cd4e
bpo-44113: Set config.install_signal_handlers = 0
corona10 May 12, 2021
83bd5d8
bpo-44113: Add empty line
corona10 May 12, 2021
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28 changes: 20 additions & 8 deletions Modules/_xxtestfuzz/fuzzer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -411,9 +411,26 @@ int __lsan_is_turned_off(void) { return 1; }


int LLVMFuzzerInitialize(int *argc, char ***argv) {
wchar_t* wide_program_name = Py_DecodeLocale(*argv[0], NULL);
Py_SetProgramName(wide_program_name);
PyConfig config;
PyConfig_InitPythonConfig(&config);
config.install_signal_handlers = 0;
PyStatus status;
status = PyConfig_SetBytesString(&config, &config.program_name, *argv[0]);
if (PyStatus_Exception(status)) {
goto fail;
}

status = Py_InitializeFromConfig(&config);
if (PyStatus_Exception(status)) {
goto fail;
}
PyConfig_Clear(&config);

return 0;

fail:
PyConfig_Clear(&config);
Py_ExitStatusException(status);
}

/* Fuzz test interface.
Expand All @@ -424,12 +441,7 @@ int LLVMFuzzerInitialize(int *argc, char ***argv) {
(And we bitwise or when running multiple tests to verify that normally we
only return 0.) */
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
if (!Py_IsInitialized()) {
/* LLVMFuzzerTestOneInput is called repeatedly from the same process,
with no separate initialization phase, sadly, so we need to
initialize CPython ourselves on the first run. */
Py_InitializeEx(0);
}
assert(Py_IsInitialized());

int rv = 0;

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