Description
Steps to reproduce:
- You will need Windows on ARM, see https://reactos.org/wiki/ARM_Port#Debugging_steps
- If you intend to work on this, but don't have required environment, you can ask for help in the Mattermost chat
- Build OSK application for ARM architecture and start it with WinDbg in WoA environment
(60.848): Access violation - code c0000005 (first chance)
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msvcrt!memcpy_strict_align+0x13a:
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763fcac2 f903070d vst1.8 {d0},[r3]! 00000002=????????????????
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0:000> kp
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# Child-SP RetAddr Call Site
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00 00e4f4f8 011c2b16 msvcrt!memcpy_strict_align+0x13a
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01 00e4f500 011c13ce osk!__rt_sdiv(int divisor = 0n89, int dividend = 0n711)+0x1e [sdk\lib\crt\math\arm\__rt_sdiv.c @ 24]
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02 00e4f528 011c1602 osk!OSK_DlgInitDialog(struct HWND__ * hDlg = 0x00040134)+0x146 [base\applications\osk\main.c @ 198]
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See analysis of the problem discussion here: https://chat.reactos.org/reactos/pl/qxo7iqiypjbf5qf9mwufntdpfh
Comment from ThePhysicist:
Yes, __rt_sdiv is supposed to return the result in r0, r1, but the c compiler passes it as the first parameter. I can have a look.
Full debug log from WinDbg: osk_arm_dbg.txt
Attachments
Issue Links
- is blocked by
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CORE-17613 osk!__rt_sdiv_worker crash on ARM (triggered by RTC)
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- Resolved
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- relates to
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- Resolved
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