GCC generating invalid assembly

[Andrew Pinski]

On Mar 6, 2005, at 6:39 PM, Dan Kegel wrote:

> sam124@operamail.com wrote:
>> I compiled unexec.c from Emacs 21.3 with -O2, and I got the error 
>> from GNU as on line 1498:
>> Fatal error: C_EFCN symbol out of scope
>> I'm on the x86.  This only happens if all three of the following are 
>> satisfied
>>  1) -gcoff debugging information is being generated
>>  2) -funit-at-a-time is on
>>  3) -O is on
>> Turning off -O caused it to work fine.  Turning off -funit-at-a-time 
>> caused it to work fine.  Using a diffrent debugging information 
>> format caused it to work fine.
>
> You forgot to say which version of gcc.
>
> Is this maybe http://gcc.gnu.org/PR9963 ?

Also note that -gcoff is not really tested or supported any more, 
especially
on elf targets.  I would not use it at all.  stabs or dwarf-2 is more
supported formats.  Dwarf-2 support is also in the current version of 
gcc
for cygwin.

-- Pinski