Backport #1442: report exception when startup file cannot be run.

Misc/NEWS

@@ -12,6 +12,9 @@ What's New in Python 2.5.3?
 Core and builtins
 -----------------
 
+- Patch #1442: properly report exceptions when the PYTHONSTARTUP file
+  cannot be executed.
+
 - The compilation of a class nested in another class used to leak one
   reference on the outer class name.
 
@@ -27,6 +30,7 @@ Core and builtins
 - Issue #2238: Some syntax errors in *args and **kwargs expressions could give
   bogus error messages.
 
+
 Library
 -------
 
@@ -81,8 +85,9 @@ Build
 Windows
 -------
 
+
 What's New in Python 2.5.2?
-=============================
+===========================
 
 *Release date: 21-Feb-2008*
 

Modules/main.c

@@ -134,6 +134,15 @@ static void RunStartupFile(PyCompilerFlags *cf)
 			(void) PyRun_SimpleFileExFlags(fp, startup, 0, cf);
 			PyErr_Clear();
 			fclose(fp);
+               } else {
+			int save_errno;
+			save_errno = errno;
+			PySys_WriteStderr("Could not open PYTHONSTARTUP\n");
+			errno = save_errno;
+			PyErr_SetFromErrnoWithFilename(PyExc_IOError,
+						       startup);
+			PyErr_Print();
+			PyErr_Clear();
 		}
 	}
 }