44 lines
		
	
	
		
			921 B
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			44 lines
		
	
	
		
			921 B
		
	
	
	
		
			C
		
	
	
	
/*
 | 
						|
 * sehsub.c
 | 
						|
 *
 | 
						|
 * In an attempt to see what might be going on inside CRTDLL, this program
 | 
						|
 * walks the exception list after creating a new thread with _beginthread.
 | 
						|
 *
 | 
						|
 * It turns out that _beginthread DOES install an exception handler, as
 | 
						|
 * expected, but this handler is NOT exported by CRTDLL (it is certainly
 | 
						|
 * not _except_handler2 or _XcptFilter)... an odd and unpleasant turn of
 | 
						|
 * events.
 | 
						|
 */
 | 
						|
 | 
						|
#include <windows.h>
 | 
						|
#include <excpt.h>
 | 
						|
#include <process.h>
 | 
						|
 | 
						|
#include "exutil.h"
 | 
						|
 | 
						|
extern void* __imp__except_handler3;
 | 
						|
 | 
						|
unsigned
 | 
						|
my_thread (void * p)
 | 
						|
{
 | 
						|
	printf ("In my thread.\n");
 | 
						|
	WalkExceptionHandlers();
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
main ()
 | 
						|
{
 | 
						|
	unsigned long	h;
 | 
						|
	unsigned	id;
 | 
						|
	printf ("In main.\n");
 | 
						|
	WalkExceptionHandlers();
 | 
						|
 | 
						|
	printf ("Except_handler3 %08x\n", __imp__except_handler3);
 | 
						|
	h = _beginthreadex (NULL, 0, my_thread, NULL, 0, &id);
 | 
						|
 | 
						|
	WaitForSingleObject ((HANDLE) h, INFINITE);
 | 
						|
	CloseHandle ((HANDLE) h);
 | 
						|
	return;
 | 
						|
}
 | 
						|
 |