Patch 1352 (continued in issue 1329) by Christian Heimes.
Before sys.stderr is set to the proper thing, set it to a really simple
file-like object that can print tracebacks using direct file descriptor I/O.
This is handy for debugging.
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 76da8fb..ec9ed02 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -151,7 +151,7 @@
{
PyInterpreterState *interp;
PyThreadState *tstate;
- PyObject *bimod, *sysmod;
+ PyObject *bimod, *sysmod, *pstderr;
char *p;
#if defined(HAVE_LANGINFO_H) && defined(CODESET)
char *codeset;
@@ -228,6 +228,13 @@
PyDict_SetItemString(interp->sysdict, "modules",
interp->modules);
+ /* Set up a preliminary stderr printer until we have enough
+ infrastructure for the io module in place. */
+ pstderr = PyFile_NewStdPrinter(fileno(stderr));
+ if (pstderr == NULL)
+ Py_FatalError("Py_Initialize: can't set preliminary stderr");
+ PySys_SetObject("stderr", pstderr);
+
_PyImport_Init();
/* initialize builtin exceptions */