m68k bootstrapping broken

[Bernardo Innocenti]

Richard Zidlicky wrote:
> Hi,
> 
> bootstrapping with "languages=c" just completed.

Did you get this warning?

stage1/xgcc -Bstage1/ -B/home/bernie/src/m68k-netbsdelf-HEAD-install/m68k-unknown-netbsdelf1.6.2./bin/ -c   -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes
 -Wmissing-prototypes -pedantic -Wno-long-long -Wold-style-definition -Werror -fno-common   -DHAVE_CONFIG_H    -I. -I. -I../../combined-HEAD/gcc -I../../combined-HEAD/gcc
/. -I../../combined-HEAD/gcc/../include  ../../combined-HEAD/gcc/bb-reorder.c -o bb-reorder.o
../../combined-HEAD/gcc/bb-reorder.c: In function `reorder_basic_blocks':
../../combined-HEAD/gcc/bb-reorder.c:186: warning: 'count_threshold' might be used uninitialized in this function
gmake[1]: *** [bb-reorder.o] Error 1
gmake[1]: Leaving directory `/home/bernie/src/m68k-netbsdelf-HEAD-build/gcc'
gmake: *** [stage2_build] Error 2


I get it on m68k-netbsd while building stage2 with the stage1 compiler.
I can't reproduce it on i386-pc-linux, and this warning is clearly a
deficiency in control flow analysis, something that isn't supposed to
vary on a per-host basis.

> The argpointer
> elimination problem still remains - crosscompiler does it correctly,
> bootstrapped compiler doesnt.

There definitely must be yet another bug besides the one found by
Andreas.  I'm still running make bootstrap on my m68k-netbsd account,
so I can't confirm your findings :-(


> The infinite recrusion with when compiling cp-demangle also remains.

Have you tried with a newer GCC snapshot?

-- 
  // Bernardo Innocenti - Develer S.r.l., R&D dept.
\X/  http://www.develer.com/