This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [5/8] Tweak bitfield alignment handling


John David Anglin writes:
 > On Sun, 18 Nov 2012, Richard Sandiford wrote:
 > 
 > >        HOST_WIDE_INT start = bitpos_ - (bitpos_ % unit);
 > >        if (bitregion_start_ && start < bitregion_start_)
 > >  	break;
 > > -      if (bitregion_end_ && start + unit > bitregion_end_ + 1)
 > > +      if (start + unit > bitregion_end_ + 1)
 > 
 > This causes:
 > 
 > /home/dave/gnu/gcc/objdir/./prev-gcc/g++ -B/home/dave/gnu/gcc/objdir/./prev-gcc/ -B/home/dave/opt/gnu/gcc/gcc-4.8.0/hppa-linux-gnu/bin/ -nostdinc++ -B/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/src/.libs -B/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu -I/home/dave/gnu/gcc
 > /objdir/prev-hppa-linux-gnu/libstdc++-v3/include -I/home/dave/gnu/gcc/gcc/libstdc++-v3/libsupc++ -L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/sr
 > c/.libs -L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.libs -c   -g -O2 -DIN_GCC   -fno-exceptions -fno-rtti -fasynchronous-unwind-tabl
 > es -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribut
 > e -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror 
 > -fno-common  -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../g
 > cc/gcc/../include -I../../gcc/gcc/../libcpp/include  -I../../gcc/gcc/../libdecnu
 > mber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../li
 > bbacktrace    ../../gcc/gcc/stor-layout.c -o stor-layout.o../../gcc/gcc/stor-layout.c: In member function ã??bool bit_field_mode_iterator::n
 > ext_mode(machine_mode*)ã??:
 > ../../gcc/gcc/stor-layout.c:2690:43: error: comparison between signed and unsign
 > ed integer expressions [-Werror=sign-compare]
 >        if (start + unit > bitregion_end_ + 1)
 > 					   ^
 > cc1plus: all warnings being treated as errors

This error also breaks m68k-linux bootstrap.

HWI32 issue?


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]