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[Qemu-devel] [Bug 916720] Re: select fails on windows because a non-sock


From: Meador Inge
Subject: [Qemu-devel] [Bug 916720] Re: select fails on windows because a non-socket fd is in the rfds set
Date: Thu, 19 Apr 2012 13:24:15 -0000

I am still seeing the symptoms that Arie pointed out:

Remote debugging using :1234
Ignoring packet error, continuing...
warning: unrecognized item "timeout" in "qSupported" response
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Malformed response to offset query, timeout

I started QEMU like:

arm-none-eabi-qemu-system.exe -gdb
tcp:127.0.0.1:1234,nowait,nodelay,server,ipv4 -S -semihosting -kernel
hello.out

This was with an ARM EABI system emulator that I built from today's
mainline.  From a brief look it seems like QEMU is going into 'g_poll'
and never coming out.

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https://bugs.launchpad.net/bugs/916720

Title:
  select fails on windows because a non-socket fd is in the rfds set

Status in QEMU:
  Fix Committed

Bug description:
  The select call in file main_loop.c at line 460 fails on windows
  because a non-socket fd is in the rfds set. As a result, gdb remote
  connections will never be accepted by qemu. The select function
  returns with -1. WSAGetLastError returns code 10038 (WSAENOTSOCK).

  I start qemu as follows:
  qemu-system-arm -cpu cortex-m3 -M lm3s6965evb -nographic -monitor null 
-serial null -semihosting -kernel test1.elf -S -gdb tcp:127.0.0.1:2200

  qemu is configure with:
  CFLAGS="-O4 -march=i686"
  configure --target-list="i386-softmmu arm-softmmu sparc-softmmu ppc-softmmu" 
--prefix=/home/qemu/install --cc=mingw32-gcc --host-cc=mingw32-gcc 
--audio-drv-list="dsound sdl" --audio-card-list="ac97 es1370 sb16 cs4231a adlib 
gus"

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