As of 20100104 (rev. 155613), mainline failsto bootstrap on alpha-dec-osf4.0f
while compiling the stage3 libiberty/regex.o:
% /vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/xgcc
-B/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/
-B/vol/gcc/alpha-dec-osf4.0f/bin/ -B/vol/gcc/alpha-dec-osf4.0f/bin/
-B/vol/gcc/alpha-dec-osf4.0f/lib/ -isystem /vol/gcc/alpha-dec-osf4.0f/include
-isystem /vol/gcc/alpha-dec-osf4.0f/sys-include -c -DHAVE_CONFIG_H -g -O2
-I. -I/vol/gcc/src/gcc-dist/libiberty/../include -W -Wall -Wwrite-strings
-Wc++-compat -Wstrict-prototypes -pedantic
/vol/gcc/src/gcc-dist/libiberty/regex.c -o regex.o -save-temps -v
Reading specs from /vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/specs
COLLECT_GCC=/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/xgcc
COLLECT_LTO_WRAPPER=/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/lto-wrapper
Target: alpha-dec-osf4.0f
Configured with: /vol/gcc/src/gcc-dist/configure --prefix=/vol/gcc
--with-local-prefix=/vol/gcc --disable-nls --with-gmp=/vol/gcc
--with-mpfr=/vol/gcc --with-mpc=/vol/gcc --with-libelf=/vol/gcc --host
alpha-dec-osf4.0f --build alpha-dec-osf4.0f --target alpha-dec-osf4.0f
--enable-languages=c,c++,fortran,java,objc
Thread model: posix
gcc version 4.5.0 20100104 (experimental) [trunk revision 155613] (GCC)
COLLECT_GCC_OPTIONS='-B/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/'
'-B/vol/gcc/alpha-dec-osf4.0f/bin/' '-B/vol/gcc/alpha-dec-osf4.0f/bin/'
'-B/vol/gcc/alpha-dec-osf4.0f/lib/' '-isystem'
'/vol/gcc/alpha-dec-osf4.0f/include' '-isystem'
'/vol/gcc/alpha-dec-osf4.0f/sys-include' '-c' '-DHAVE_CONFIG_H' '-g' '-O2'
'-I.' '-I/vol/gcc/src/gcc-dist/libiberty/../include' '-W' '-Wall'
'-Wwrite-strings' '-Wc++-compat' '-Wstrict-prototypes' '-pedantic' '-o'
'regex.o' '-save-temps' '-v'
/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/cc1 -E -quiet -v -I.
-I/vol/gcc/src/gcc-dist/libiberty/../include -iprefix
/tmp_mnt/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/prev-gcc/../lib/gcc/alpha-dec-osf4.0f/4.5.0/
-isystem /vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/include -isystem
/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/include-fixed
-DHAVE_CONFIG_H -isystem /vol/gcc/alpha-dec-osf4.0f/include -isystem
/vol/gcc/alpha-dec-osf4.0f/sys-include /vol/gcc/src/gcc-dist/libiberty/regex.c
-W -Wall -Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic -g
-fworking-directory -O2 -fpch-preprocess -o regex.i
[...]
/vol/gcc/obj/gcc-4.5.0-20100104/4.0f-gcc/./prev-gcc/cc1 -fpreprocessed regex.i
-quiet -dumpbase regex.c -auxbase-strip regex.o -g -O2 -W -Wall -Wwrite-strings
-Wc++-compat -Wstrict-prototypes -pedantic -version -o regex.s
GNU C (GCC) version 4.5.0 20100104 (experimental) [trunk revision 155613]
(alpha-dec-osf4.0f)
compiled by GNU C version 4.5.0 20100104 (experimental) [trunk revision
155613], GMP version 4.2.1, MPFR version 2.3.2, MPC version 0.8
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C (GCC) version 4.5.0 20100104 (experimental) [trunk revision 155613]
(alpha-dec-osf4.0f)
compiled by GNU C version 4.5.0 20100104 (experimental) [trunk revision
155613], GMP version 4.2.1, MPFR version 2.3.2, MPC version 0.8
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 8f3075b99b6a6af3bebe7ab0e925e5fb
In file included from /vol/gcc/src/gcc-dist/libiberty/regex.c:638:0:
/vol/gcc/src/gcc-dist/libiberty/regex.c: In function 'byte_re_compile_fastmap':
/vol/gcc/src/gcc-dist/libiberty/regex.c:4660:20: warning: '({anonymous})' may
be used uninitialized in this function
/vol/gcc/src/gcc-dist/libiberty/regex.c:4653:22: note: '({anonymous})' was
declared here
In file included from /vol/gcc/src/gcc-dist/libiberty/regex.c:638:0:
/vol/gcc/src/gcc-dist/libiberty/regex.c: In function
'byte_re_match_2_internal':
/vol/gcc/src/gcc-dist/libiberty/regex.c:5543:1: error: definition in block 8
does not dominate use in block 7
for SSA_NAME: D.6360_246 in statement:
D.6361_247 = regstart_61 + D.6360_246;
/vol/gcc/src/gcc-dist/libiberty/regex.c:5543:1: internal compiler error:
verify_ssa failed
The problem doesn't happen at -O0, only with -O and above:
% cc1 -fpreprocessed regex.i -quiet -g -O
In file included from /vol/gcc/src/gcc-dist/libiberty/regex.c:638:0:
/vol/gcc/src/gcc-dist/libiberty/regex.c: In function
'byte_re_match_2_internal':
/vol/gcc/src/gcc-dist/libiberty/regex.c:5543:1: error: definition in block 13
does not dominate use in block 12
for SSA_NAME: D.6360_246 in statement:
D.6361_247 = regstart_61 + D.6360_246;
/vol/gcc/src/gcc-dist/libiberty/regex.c:5543:1: internal compiler error:
verify_ssa failed
--
Summary: [4.5 regression] ICE building stage3 libiberty/regex.o
on Tru64 UNIX: verify_ssa failed
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ro at gcc dot gnu dot org
GCC build triplet: alpha-dec-osf4.0f
GCC host triplet: alpha-dec-osf4.0f
GCC target triplet: alpha-dec-osf4.0f
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42619
