[Qemu-devel] [Bug 1477683] [NEW] FPU in qemu-system-i386 works incorrectly

[Daniel Milewski]

Public bug reported:

FPU bug in qemu-system-i386 makes software which use floating point
numbers work incorrectly. For instance, the one included in attachment
prints out 0 instead of 2147483648. The same code works ok in qemu-
system-x86_64.

I have this issue in QEMU 2.3.0 on two different x86 guests (Parabola
GNU/Linux-libre and libreCMC).

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "main.c"
   https://bugs.launchpad.net/bugs/1477683/+attachment/4433189/+files/main.c

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https://bugs.launchpad.net/bugs/1477683

Title:
  FPU in qemu-system-i386 works incorrectly

Status in QEMU:
  New

Bug description:
  FPU bug in qemu-system-i386 makes software which use floating point
  numbers work incorrectly. For instance, the one included in attachment
  prints out 0 instead of 2147483648. The same code works ok in qemu-
  system-x86_64.

  I have this issue in QEMU 2.3.0 on two different x86 guests (Parabola
  GNU/Linux-libre and libreCMC).

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