Crash in DLL doesn't get decoded

[pedjaman]

It works quite well when a crash happen in exe. But, if a crash is in DLL or plugin loaded with QPluginLoader it doesn't get decoded well. Any suggestion how to catch from DLL or plugin?

Platform: Windows Mingw 64

Here it comes an example:

RTSuite v1.7.0 02 Mar 2020 @ 20:55:02

EXCEPTION_INT_DIVIDE_BY_ZERO

[0] 0x000000006f10501d ?? ??:0 [1] 0x0000000068aa2720 ?? ??:0 [2] 0x0000000068aadb7a ?? ??:0 [3] 0x0000000068aa334b ?? ??:0 [4] 0x00000000013c7c8c ?? ??:0 [5] 0x00000000013ced23 ?? ??:0 [6] 0x0000000068a758c8 ?? ??:0 [7] 0x0000000068ad1344 ?? ??:0 [8] 0x0000000068ad15a2 ?? ??:0 [9] 0x00007ff98f3f5b6d ?? ??:0 [10] 0x00007ff98f3f5562 ?? ??:0 [11] 0x0000000068ad0dcb ?? ??:0 [12] 0x000000006a8fb565 ?? ??:0 [13] 0x0000000068a7395e ?? ??:0 [14] 0x000000000158e109 ?? ??:0 [15] 0x000000006f10b2f1 ?? ??:0 [16] 0x000000006f110202 ?? ??:0 [17] 0x000000006f110343 ?? ??:0 [18] 0x0000000068aa26d3 ?? ??:0 [19] 0x000000000163056f ?? ??:0 [20] 0x0000000001635cff ?? ??:0 [21] 0x0000000068aa2600 ?? ??:0 [22] 0x00000000015df9dd ?? ??:0 [23] 0x0000000001405378 ?? ??:0 [24] 0x000000000149c6ae ?? ??:0 [25] 0x00000000015e862e ?? ??:0 [26] 0x0000000068a74430 ?? ??:0 [27] 0x00000000013c7c65 ?? ??:0 [28] 0x00000000013cfd1a ?? ??:0 [29] 0x0000000068a75a88 ?? ??:0 [30] 0x00000000013ce118 ?? ??:0 [31] 0x0000000001419edd ?? ??:0 [32] 0x000000000141caa3 ?? ??:0 [33] 0x00000000013c7c8c ?? ??:0 [34] 0x00000000013ced23 ?? ??:0 [35] 0x0000000068a75a88 ?? ??:0 [36] 0x0000000061977824 ?? ??:0 [37] 0x00000000619789b5 ?? ??:0 [38] 0x0000000061950f2c ?? ??:0 [39] 0x0000000068ad187a ?? ??:0 [40] 0x00007ff98f3f5b6d ?? ??:0 [41] 0x00007ff98f3f5562 ?? ??:0 [42] 0x0000000068ad0dcb ?? ??:0 [43] 0x000000006a8fb565 ?? ??:0 [44] 0x0000000068a7395e ?? ??:0 [45] 0x0000000068a7cd87 ?? ??:0 [46] 0x0000000000409108 qMain(int, char**) at main.cpp:123 [47] 0x0000000000412610 /tools/addr2line: Dwarf Error: Could not find abbrev number 69. ?? at qtmain_win.cpp:? [48] 0x00000000004013c7 /tools/addr2line: Dwarf Error: Could not find abbrev number 69. ?? at crtexe.c:? [49] 0x00000000004014cb /tools/addr2line: Dwarf Error: Could not find abbrev number 69. ?? at crtexe.c:? [50] 0x00007ff9909b7bd4 ?? ??:0 [51] 0x00007ff990c0ced1 ?? ??:0

[asmaloney]

I didn't need this for my use-case, so I never looked into it. From looking at the code you will need to:

1. Determine what code object (DLL, executable) a given frame is in
2. Change the calls to _addressToLine() to specify the correct object

You might look at the references I have in my original blog post - maybe one of them has suggestions about how to do this?

[pedjaman]

Thanks for the quick response.

The steps recommended above are the ones I wanted to do but reached many obstacles. For example, addr2line doesn't work well with DLLs. I have tried, with calculating base address and subtracting from the exception address. Additionally, I have tried with -j command-line switch. Still no luck of getting it working.

As I had no time to play around about, was hoping that you already implemented this in new version :)

Anyways, thanks for suggestions.

[asmaloney]

If you are looking for something Windows-only, you might take a look at StackWalker.

He understands more about this than I ever will.