A few potentially ominous, and several likely harmless warningsduring 4.0 build

[Paul Schlie <schlie at comcast dot net>]

Warnings generated during a failed avr target build of 4.0 as of today, on a
mac/dwawin-7.6 host which should likely be verified as being harmless, and
then silenced if so. (sending the report just in case the build failure may
be related to one of the more ominous warnings, and for reference: built via
../gcc/configure --target=avr --disable-nls --enable-languages=c )

[ other more target specific warnings/failures noted via another PR ]

--- don't know where the below should have been defined, but seems fragile?:

gcc   -g -O2  -DIN_GCC -DCROSS_COMPILE  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes  -fno-common   -DHAVE_CONFIG_H
-DGENERATOR_FILE  -o build/gengtype \
 build/gengtype.o build/gengtype-lex.o build/gengtype-yacc.o \
 build/errors.o ../build-powerpc-apple-darwin7.6.0/libiberty/libiberty.a
build/gengtype
warning: structure `c_arg_info' used but not defined
warning: structure `c_switch' used but not defined
warning: structure `reorder_block_def' used but not defined
warning: structure `et_node' used but not defined
warning: structure `loop' used but not defined
warning: structure `reg_info_def' used but not defined
warning: structure `value_set' used but not defined
warning: structure `alias_var_def' used but not defined
warning: structure `c_arg_info' used but not defined
warning: structure `c_switch' used but not defined
warning: structure `reorder_block_def' used but not defined
warning: structure `et_node' used but not defined
warning: structure `loop' used but not defined
warning: structure `reg_info_def' used but not defined
warning: structure `value_set' used but not defined
warning: structure `alias_var_def' used but not defined
echo timestamp > s-gtype

--- the last two warnings below imply something's fragile?:

gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/macro.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/macro.c:27:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
../../gcc/libcpp/macro.c: In function `padding_token':
../../gcc/libcpp/macro.c:913: warning: assignment discards qualifiers from
pointer target type
../../gcc/libcpp/macro.c: In function `create_iso_definition':
../../gcc/libcpp/macro.c:1422: warning: assignment from incompatible pointer
type

--- likely not a big deal, but would be nicer if verified/silenced:

gcc -c   -g -O2  -DIN_GCC -DCROSS_COMPILE  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes  -fno-common -Wno-error
-DHAVE_CONFIG_H -DGENERATOR_FILE    -I. -Ibuild -I../../gcc/gcc
-I../../gcc/gcc/build -I../../gcc/gcc/../include
-I../../gcc/gcc/../libcpp/include  \
 -o build/gengtype-yacc.o gengtype-yacc.c
/usr/share/bison.simple: In function `yyparse':
/usr/share/bison.simple:614: warning: comparison between signed and unsigned
/usr/share/bison.simple:626: warning: comparison between signed and unsigned

--- not a big deal, but would be nicer if prototypes were added to silence:

gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/charset.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/charset.c:22:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/directives.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/directives.c:23:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/errors.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/errors.c:27:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/expr.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/expr.c:22:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/files.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/files.c:25:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/identifiers.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/identifiers.c:27:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
echo "#define LOCALEDIR \"/usr/local/share/locale\"" > localedir.new
../../gcc/libcpp/../move-if-change localedir.new localedir.h
echo timestamp > localedir.hs
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/init.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/init.c:23:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/lex.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/lex.c:23:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/line-map.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/line-map.c:24:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/mkdeps.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/mkdeps.c:24:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/pch.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/pch.c:19:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
../../gcc/libcpp/pch.c: In function `cpp_read_state':
../../gcc/libcpp/pch.c:656: warning: pointer targets in passing arg 1 of
`strcspn' differ in signedness
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/symtab.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/symtab.c:23:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/traditional.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/traditional.c:20:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
rm -f libcpp.a
ar cru libcpp.a charset.o directives.o errors.o expr.o files.o identifiers.o
init.o lex.o line-map.o macro.o mkdeps.o pch.o symtab.o traditional.o
ranlib libcpp.a
gcc  -I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -g -O2  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-I../../gcc/libcpp -I. -I../../gcc/libcpp/../include
-I../../gcc/libcpp/include  -c ../../gcc/libcpp/makedepend.c
In file included from ../../gcc/libcpp/system.h:269,
                 from ../../gcc/libcpp/makedepend.c:24:
../../gcc/include/libiberty.h:80: warning: function declaration isn't a
prototype
In file included from ../../gcc/libcpp/makedepend.c:27:
../../gcc/include/getopt.h:116: warning: function declaration isn't a
prototype