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Re: m68k bootstrapping broken
Richard Zidlicky wrote:
-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 -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
Could you please try running this exact command line on your system to
make absolutely sure it's only happening on m68k-netbsdelf?
the line has several m68k-netbsd strings in it. Here is what I see:
stage2/xgcc -Bstage2/ -B/usr/m68k-rz-linux/bin/ -c -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wold-style-definition -Werror -DHAVE_CONFIG_H -I. -I. -I../../gcc-3.4-20040107/gcc -I../../gcc-3.4-20040107/gcc/. -I../../gcc-3.4-20040107/gcc/../include ../../gcc-3.4-20040107/gcc/bb-reorder.c -o bb-reorder.o
## no warnings
!!! That's incredible. Richard, Andreas: how is it possible that
such a C frontend warning depends on the host OS?
I double checked and there are no differences between my copy of
bb-reorder.c and cvs HEAD.
Anyway - is it at all reasonable to have -Werror quit on "might be used
uninitialized" warnings? It is really very dependent on gcc version and
possibly other circumstances so it makes -Werror probably less usefull
than it could be.
This is indeed correct. -Werror is only enabled in stage2+, so it
shouldn't be affected by your system compiler.
// Bernardo Innocenti - Develer S.r.l., R&D dept.