Messages in this thread |  | | Date | Wed, 28 Nov 2001 14:29:07 -0500 | From | David Relson <> | Subject | Re: Compilation problem in ndisc.c / 2.5.1-pre2 : possible gcc bug? |
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At 02:09 PM 11/28/01, you wrote: >On 28 Nov 2001, Erik Hensema wrote: > > > > > I've been looking into the compile problems of net/ipv6/ndisc.c in > > 2.5.1-pre2 and I found that the asm generated by gcc (2.95.3) is wrong: > > > > This is a small part of a diff betweem two asm files generated by gcc, note > > the missing \n's in the wrong code: > > > > - > > - addl 0(%ebp), %edx > > - adcl 4(%ebp), %edx > > - adcl 8(%ebp), %edx > > - adcl 12(%ebp), %edx > > - adcl 0(%ecx), %edx > > - adcl 4(%ecx), %edx > > - adcl 8(%ecx), %edx > > - adcl 12(%ecx), %edx > > - adcl %edi, %edx > > - adcl %eax, %edx > > - adcl $0, %edx > > - > > + addl 0(%ebp), %edxadcl 4(%ebp), %edxadcl 8(%ebp), %edxadcl > 12(%ebp), %edxadcl 0(%ecx), %edxadcl 4(%ecx), %edxadcl 8(%ecx), %edxadcl > 12(%ecx), %edxadcl %edi, %edxadcl %eax, %edxadcl $0, %edx > > >This is probably just some loop unrolling, not some as you say "wrong >code".
The lack of \n's is wrong. Adding \n's and some whitespace, gives identical code. Looks like a defective printf() in gcc.
David
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