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[ejoy]

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[cloudwu]

请帮助排查原因, 你这个信息不足.
这个错误通常是因为 C 层有空指针访问.
将 lib/ejoy2dgame.c 138 行的 lua_pcall 改成 lua_call 调用, 可以用 gdb 取到 C 调用栈.

[marsing]

我改成了
//int err = lua_pcall(L, n, r, TRACEBACK_FUNCTION);
int err = LUA_OK;
lua_call(L, n, r);

gdb bt:

Program received signal SIGSEGV, Segmentation fault.
0x1015965d in ?? () from C:\Windows\SysWOW64\ig4icd32.dll
(gdb) c
Continuing.

Breakpoint 3, call (L=0x502fe8, n=0, r=0) at lib/ejoy2dgame.c:140
140 lua_call(L, n, r);
(gdb) bt
#0 call (L=0x502fe8, n=0, r=0) at lib/ejoy2dgame.c:140
#1 0x00402cb3 in ejoy2d_game_drawframe (G=0x5017f0) at lib/ejoy2dgame.c:187
#2 0x0040cfdf in ejoy2d_win_frame () at mingw/winfw.c:90
#3 0x0040c8e4 in update_frame (hDC=0xc6012da9) at mingw/window.c:61
#4 0x0040c9df in WndProc@16 (hWnd=0x6a0896, message=15, wParam=0, lParam=0)
at mingw/window.c:83
#5 0x767962fa in USER32!OffsetRect () from C:\Windows\syswow64\user32.dll
#6 0x006a0896 in ?? ()
#7 0x0000000f in ?? ()
#8 0x00000000 in ?? ()
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x1015965d in ?? () from C:\Windows\SysWOW64\ig4icd32.dll
(gdb) c
Continuing.

Breakpoint 3, call (L=0x502fe8, n=0, r=0) at lib/ejoy2dgame.c:140
140 lua_call(L, n, r);
(gdb) bt
#0 call (L=0x502fe8, n=0, r=0) at lib/ejoy2dgame.c:140
#1 0x00402cb3 in ejoy2d_game_drawframe (G=0x5017f0) at lib/ejoy2dgame.c:187
#2 0x0040cfdf in ejoy2d_win_frame () at mingw/winfw.c:90
#3 0x0040c8e4 in update_frame (hDC=0x2c012104) at mingw/window.c:61
#4 0x0040c9df in WndProc@16 (hWnd=0x6a0896, message=15, wParam=0, lParam=0)
at mingw/window.c:83
#5 0x767962fa in USER32!OffsetRect () from C:\Windows\syswow64\user32.dll
#6 0x006a0896 in ?? ()
#7 0x0000000f in ?? ()
#8 0x00000000 in ?? ()
(gdb) c
Continuing.
attempt to call a nil valueInferior 1 (process 7128) exited with code 01

[cloudwu]

改成 lua_call 就是为了看 call 的函数在 c 里哪里出错。不是为了看哪里调用到那里的。

发自我的 iPhone

在 2013年12月29日，下午4:52，marsing [email protected] 写道：

我改成了
//int err = lua_pcall(L, n, r, TRACEBACK_FUNCTION);
int err = LUA_OK;
lua_call(L, n, r);

gdb bt:

(gdb) b 140
Breakpoint 2 at 0x402aa7: file lib/ejoy2dgame.c, line 140.
(gdb) c
Continuing.

Breakpoint 2, call (L=0x692fe8, n=0, r=0) at lib/ejoy2dgame.c:140
140 lua_call(L, n, r);
(gdb) bt
#0 call (L=0x692fe8, n=0, r=0) at lib/ejoy2dgame.c:140
#1 0x00402cb3 in ejoy2d_game_drawframe (G=0x6917f0) at lib/ejoy2dgame.c:187
#2 0x0040cfdf in ejoy2d_win_frame () at mingw/winfw.c:90
#3 0x0040c8e4 in update_frame (hDC=0xd8012d7c) at mingw/window.c:61
#4 0x0040c9df in WndProc@16 (hWnd=0x1030792, message=15, wParam=0, lParam=0)
at mingw/window.c:83
#5 0x767962fa in USER32!OffsetRect () from C:\Windows\syswow64\user32.dll
#6 0x01030792 in ?? ()
#7 0x0000000f in ?? ()
#8 0x00000000 in ?? ()
(gdb)

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[marsing]

in ejoy2d_game_drawframe (G=0x5017f0) at lib/ejoy2dgame.c 这个不是么？

[cloudwu]

:( 出错的是 lua_call 的函数中做的事情, 你后面提供的栈信息是没有意义的.

lua_pcall 在 windows 上会将 SEH 捕获, 所以会误输出 error in error handling , 改成 lua_call 后, 应该能看到具体 C 调用出错的位置.

从前一条看,

0x1015965d in ?? () from C:\Windows\SysWOW64\ig4icd32.dll

这个是 Intel 的显卡驱动.

请确认你的驱动支持 OpenGL ES 2.0 以上.

并检查一下是哪条 opengl 调用出错.

[marsing]

出问题的电脑是笔记本 显卡是nVIDIA GeForce GT 540M ,更新到最新驱动，测试还是不行。
今天用公司的电脑台式，显卡GT 610，就OK了。

可能是我笔记本的故障，但还没查到问题在哪里。

云风老大 费心了，谢谢， 这个可以关了。