https://github.com/charles-zablit created https://github.com/llvm/llvm-project/pull/181160
Add checks around the `Py_init*` calls to check if Python was initialized correctly. If any of the calls fails, print an error and return early. Python will fail to initialize if `%SystemRoot%` is not defined which causes lldb to crash. This patch prints an error if the initialization fails and returns early. lldb still crashes but gives a clue as to why that's the case. >From 442c48f4f3c75d17b2c41795df01d335e5bcd403 Mon Sep 17 00:00:00 2001 From: Charles Zablit <[email protected]> Date: Thu, 12 Feb 2026 14:57:05 +0000 Subject: [PATCH] [lldb][windows] print an error if Python fails to initialize --- .../Python/ScriptInterpreterPython.cpp | 20 +++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp index 35a772c1454df..9af480c4113d9 100644 --- a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp +++ b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp @@ -120,14 +120,30 @@ struct InitializePythonRAII { return spec.GetPath(); }(); if (!g_python_home.empty()) { - PyConfig_SetBytesString(&config, &config.home, g_python_home.c_str()); + PyStatus py_status = + PyConfig_SetBytesString(&config, &config.home, g_python_home.c_str()); + if (py_status._type == PyStatus::_PyStatus_TYPE_ERROR) { + PyConfig_Clear(&config); + llvm::WithColor::error() << "Failed to set the Python config: '" + << py_status.err_msg << "'.\n"; + return; + } } config.install_signal_handlers = 0; - Py_InitializeFromConfig(&config); + PyStatus py_status = Py_InitializeFromConfig(&config); PyConfig_Clear(&config); + if (py_status._type == PyStatus::_PyStatus_TYPE_ERROR) { + llvm::WithColor::error() + << "Python failed to initialize: '" << py_status.err_msg << "'.\n"; + return; + } #else Py_InitializeEx(/*install_sigs=*/0); + if (!Py_IsInitialized()) { + llvm::WithColor::error() << "Python failed to initialize.\n"; + return; + } #endif // The only case we should go further and acquire the GIL: it is unlocked. _______________________________________________ lldb-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
