SMPEG 0.4.2 causes seg fault with SDL 1.1.8 in Windows NT

SDL Development
#1

I installed the SDL 1.1.8 development for Win32.

My app. that used SMPEG 0.4.2 sucessfully with SDL 1.1.7, now crashes (with
SDL 1.1.8) with a SEG fault in SMPEG_new().__________________________________
I?aki Idigoras Igartua <@Idigoras_Inaki>

#2

I installed the SDL 1.1.8 development for Win32.

My app. that used SMPEG 0.4.2 sucessfully with SDL 1.1.7, now crashes (with
SDL 1.1.8) with a SEG fault in SMPEG_new().

Can you build a debug version of the SDL library and find out where it
crashes?

Thanks,
-Sam Lantinga, Lead Programmer, Loki Entertainment Software

#3

SMPEG calls SDL_mutexP() in MPEGSystem::Read (MPEGsystem.cpp line 570)

this goes to SDL_endian.c line 85:

int SDL_WriteLE32 (SDL_RWops *dst, Uint32 value)
{
value = SDL_SwapLE32(value);
return(SDL_RWwrite(dst, &value, (sizeof value), 1));
}

It is SDL_RWwrite() who causes the segfault:

The thread 0x1C4 has exited with code -11 (0xFFFFFFF5).
First-chance exception in winview.exe: 0xC0000005: Access Violation.

The dissasembly is:
88: return(SDL_RWwrite(dst, &value, (sizeof value), 1));
1003101F push 1
10031021 push 4
10031023 lea ecx,[ebp+0Ch]
10031026 push ecx
10031027 mov edx,dword ptr [ebp+8]
1003102A push edx
1003102B mov eax,dword ptr [ebp+8]
1003102E call dword ptr [eax+8]
10031031 add esp,10h
89: }

the call (with eax = 20321536) goes to :
00000011 ???
00000012 ???
00000013 ???

which causes the exception

Hope this helps : )__________________________________
I?aki Idigoras Igartua <@Idigoras_Inaki>

-----Mensaje original-----
De: Sam Lantinga [SMTP:slouken at devolution.com]
Enviado el: martes 13 de febrero de 2001 20:40
Para: sdl at lokigames.com
Asunto: Re: [SDL] SMPEG 0.4.2 causes seg fault with SDL 1.1.8 in
Windows NT

I installed the SDL 1.1.8 development for Win32.

My app. that used SMPEG 0.4.2 sucessfully with SDL 1.1.7, now crashes
(with
SDL 1.1.8) with a SEG fault in SMPEG_new().

Can you build a debug version of the SDL library and find out where it
crashes?

Thanks,
-Sam Lantinga, Lead Programmer, Loki Entertainment Software