Re: more, re painful optimization bug in 19980921

[Jeffrey A Law <law at cygnus dot com>]

  In message <199809272050.NAA20741@cygnus.com>you write:
  > 
  > Sorry for the second email but I have a simpler, template-free version of
  > the program that exhibits the same error (maybe this simplifies debugging?)
  > Also I want to point out that the same problem exists on egcs-1.1b and
  > gcc-2.8.1
  > 
  > 
  > % cat pp5.cc
  > #include <stdio.h>
  > 
  > int main()
  > {
  >   int n=1000;
  > 
  >   printf("%d\n", n);
  >   for(int i=0; i<1; ++i) {
  >     printf("%d\n", n);
  >     n=666;
  >     (int&)n;
  >   }
  > }
  > 
  > 
  > % g++ -v && g++ -O pp5.cc && a.out
  > Reading specs from /afs/cs.cmu.edu/project/cmcl-kosak/various-gcc/egcs-1998
  > 0921/i386_linux2/lib/gcc-lib/i686-pc-linux-gnulibc1/egcs-2.92.11/specs
  > gcc version egcs-2.92.11 19980921 (gcc2 ss-980609 experimental)
  > 1000
  > 666
  > 
  > % ~/ko/various-gcc/egcs-latest-release/i386_linux2/bin/g++ -v && ~/ko/vario
  > us-gcc/egcs-latest-release/i386_linux2/bin/g++ -O pp5.cc && a.out
  > Reading specs from /afs/cs.cmu.edu/project/cmcl-kosak/various-gcc/egcs-1.1b
  > /i386_linux2/lib/gcc-lib/i686-pc-linux-gnulibc1/egcs-2.91.57/specs
  > gcc version egcs-2.91.57 19980901 (egcs-1.1 release)
  > 1000
  > 666
  > 
  > % ~/281local/bin/g++ -v && ~/281local/bin/g++ -O pp5.cc && a.out
  > Reading specs from /home/kosak/281local/lib/gcc-lib/i686-pc-linux-gnulibc1/
  > 2.8.1/specs
  > gcc version 2.8.1
  > 1000
  > 666
This has been fixed for the upcoming egcs-1.1.1 release.
jeff