Re: 2.6.19-rc5-mm1 fails to compile with gcc 4.2

drivers/kvm/kvm_main.c: In function 'kvm_dev_ioctl_run':
drivers/kvm/kvm_main.c:153: error: 'asm' operand has impossible
constraints drivers/kvm/kvm_main.c:158: error: 'asm' operand has
impossible constraints

Smells like a gcc regression.  Can you send .config?

Or better yet, preprocessed source and full gcc command line (as seen on

'make V=1').

Just the function containing those lines (please mark which
lines they are) would do probably.

It does look like a gcc bug -- -O0 makes it go away.
Details at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29808

PR29808 is not a GCC bug, but invalid code.


Segher

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• References:
  • 2.6.19-rc5-mm1 fails to compile with gcc 4.2
    • From: Bernhard Rosenkraenzer <[email protected]>
  • Re: 2.6.19-rc5-mm1 fails to compile with gcc 4.2
    • From: Avi Kivity <[email protected]>
  • Re: 2.6.19-rc5-mm1 fails to compile with gcc 4.2
    • From: Bernhard Rosenkraenzer <[email protected]>

• Prev by Date: Re: SATA ICH5 not detected at boot, mm-kernels
• Next by Date: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18
• Previous by thread: Re: 2.6.19-rc5-mm1 fails to compile with gcc 4.2
• Next by thread: Re: 2.6.19-rc5-mm1 fails to compile with gcc 4.2
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]