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bootstrap/5888: Bootstrap stage 2/3 comparison failure gcc-3.0.4
- From: nirkko at dkf6 dot unibe dot ch
- To: gcc-gnats at gcc dot gnu dot org
- Date: 8 Mar 2002 19:01:34 -0000
- Subject: bootstrap/5888: Bootstrap stage 2/3 comparison failure gcc-3.0.4
- Reply-to: nirkko at dkf6 dot unibe dot ch
>Number: 5888
>Category: bootstrap
>Synopsis: Bootstrap stage 2/3 comparison failure gcc-3.0.4
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Mar 08 11:06:04 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: nirkko
>Release: gcc-3.0.4
>Organization:
>Environment:
sun sparc solaris 2.6
>Description:
bootstrap comparison failure with gcc-3.0.4
(but not previous versions 3.0.1 and earlier 2.95, 2.8.1)
when using non-standard CFLAGS for bootstrap, which
include -O3. it seems that part of the compilation uses
the given non-standard flags incl -O3, others use -O2 anyway.
-O3 etc were never a problem in earlier versions.
output of comparison at end, see below (how-to-repeat)
>How-To-Repeat:
setenv CONFIG_SHELL /bin/ksh
setenv CCFLAGS "-Wall -fPIC -O3 -funroll-loops -msupersparc -Qn -Wa,-Qn -fno-ident -fno-implicit-templates -s"
$DIRSRC_BUILD/configure \
--prefix=${DIR_PREFIX} --disable-shared \
--enable-threads \
--with-cpu=supersparc --enable-cpp \
--enable-version-specific-runtime-libs \
--disable-nls \
&& ( gmake CONFIG_SHELL=/bin/ksh \
BOOT_CFLAGS="$CCFLAGS" \
CFLAGS="$CCFLAGS" \
LIBCFLAGS="$CCFLAGS" \
LIBCXXFLAGS="$CCFLAGS -no-implicit-templates" \
bootstrap \
)
results in ( after 5 hr of correct compilation ):
Bootstrap comparison failure!
crtbegin.o differs
gcov.o differs
ggc-common.o differs
global.o differs
gmon.o differs
local-alloc.o differs
profile.o differs
toplev.o differs
gmake[1]: *** [compare] Error 1
gmake[1]: Leaving directory `/_mnt/hd2/package/gcc/gcc-3.0.4-static-bimbo2.6-obj/gcc'
gmake: *** [bootstrap] Error 2
assembler found is gas from binutils 2.11.2
linker is /usr/ccs/bin/ld
gcc to start bootstrap with is gcc-3.0.1
(created with same options, and always worked fine)
>Fix:
probably compilation with standard flags would work
(as has been reported for Solaris 2.6). However,
these same flags worked fine up to and including gcc-3.0.1
>Release-Note:
>Audit-Trail:
>Unformatted: