remove GCC_NO_ADDR_OF_PACKED_MEMBER now lfs_accessors.h works.

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW variables to remove these warnings.

apply to a bunch of the tree. mostly, these are real bugs that
should be fixed, but in many cases, only by removing the 'packed'
attribute from some structure that doesn't really need it. (i
looked at many different ones, and while perhaps 60-80% were
already properly aligned, it wasn't clear to me that the uses
were always coming from sane data vs network alignment, so it
doesn't seem safe to remove packed without careful research for
each affect struct.) clang already warned (and was not erroring)
for many of these cases, but gcc picked up dozens more.

PR/53367: Thomas Barabosch: Integer overflow in usr.sbin/dumplfs
While here use the "e" functions to always check for allocation errors.

branches: 1.17.14;
Kill another -fno-strict-aliasing.

Generated code is same with/without.

Turn off -fno-strict-aliasing for HAVE_GCC; it makes no difference to
the compiler output and is therefore ipso facto not necessary. I'll
leave it on for HAVE_LLVM as I can't check that tonight.

(If there is invalid code in here that actually requires it, let me
know so I can fix things properly.)

branches: 1.15.2;
Remove many HAVE_GCC || HAVE_PCC conditionals as the options also apply
to Clang. Add a few cases of HAVE_LLVM for -fno-strict-aliasing.

branches: 1.14.2;
remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

branches: 1.13.4;
Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

branches: 1.12.6;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.20;
sprinkle some -fno-strict-aliasing and -Wno-pointer-sign with GCC4.

use NETBSDSRCDIR as appropriate

Merge with Lite2 + local changes

enable WARNS=1 by default, but disable in unclean 3rd party code

Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

convert to new RCS Id conventions; reduce my headache

specify man pages the new way.

do not need -I/sys

X compilation

branches: 1.1.1;
Update from 4.4-Lite, with local changes.

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW variables to remove these warnings.

apply to a bunch of the tree. mostly, these are real bugs that
should be fixed, but in many cases, only by removing the 'packed'
attribute from some structure that doesn't really need it. (i
looked at many different ones, and while perhaps 60-80% were
already properly aligned, it wasn't clear to me that the uses
were always coming from sane data vs network alignment, so it
doesn't seem safe to remove packed without careful research for
each affect struct.) clang already warned (and was not erroring)
for many of these cases, but gcc picked up dozens more.

PR/53367: Thomas Barabosch: Integer overflow in usr.sbin/dumplfs
While here use the "e" functions to always check for allocation errors.

branches: 1.17.14;
Kill another -fno-strict-aliasing.

Generated code is same with/without.

Turn off -fno-strict-aliasing for HAVE_GCC; it makes no difference to
the compiler output and is therefore ipso facto not necessary. I'll
leave it on for HAVE_LLVM as I can't check that tonight.

(If there is invalid code in here that actually requires it, let me
know so I can fix things properly.)

branches: 1.15.2;
Remove many HAVE_GCC || HAVE_PCC conditionals as the options also apply
to Clang. Add a few cases of HAVE_LLVM for -fno-strict-aliasing.

branches: 1.14.2;
remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

branches: 1.13.4;
Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

branches: 1.12.6;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.20;
sprinkle some -fno-strict-aliasing and -Wno-pointer-sign with GCC4.

use NETBSDSRCDIR as appropriate

Merge with Lite2 + local changes

enable WARNS=1 by default, but disable in unclean 3rd party code

Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

convert to new RCS Id conventions; reduce my headache

specify man pages the new way.

do not need -I/sys

X compilation

branches: 1.1.1;
Update from 4.4-Lite, with local changes.

PR/53367: Thomas Barabosch: Integer overflow in usr.sbin/dumplfs
While here use the "e" functions to always check for allocation errors.

branches: 1.17.14;
Kill another -fno-strict-aliasing.

Generated code is same with/without.

Turn off -fno-strict-aliasing for HAVE_GCC; it makes no difference to
the compiler output and is therefore ipso facto not necessary. I'll
leave it on for HAVE_LLVM as I can't check that tonight.

(If there is invalid code in here that actually requires it, let me
know so I can fix things properly.)

branches: 1.15.2;
Remove many HAVE_GCC || HAVE_PCC conditionals as the options also apply
to Clang. Add a few cases of HAVE_LLVM for -fno-strict-aliasing.

branches: 1.14.2;
remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

branches: 1.13.4;
Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

branches: 1.12.6;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.20;
sprinkle some -fno-strict-aliasing and -Wno-pointer-sign with GCC4.

use NETBSDSRCDIR as appropriate

Merge with Lite2 + local changes

enable WARNS=1 by default, but disable in unclean 3rd party code

Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

convert to new RCS Id conventions; reduce my headache

specify man pages the new way.

do not need -I/sys

X compilation

branches: 1.1.1;
Update from 4.4-Lite, with local changes.

Kill another -fno-strict-aliasing.

Generated code is same with/without.

Turn off -fno-strict-aliasing for HAVE_GCC; it makes no difference to
the compiler output and is therefore ipso facto not necessary. I'll
leave it on for HAVE_LLVM as I can't check that tonight.

(If there is invalid code in here that actually requires it, let me
know so I can fix things properly.)

branches: 1.15.2;
Remove many HAVE_GCC || HAVE_PCC conditionals as the options also apply
to Clang. Add a few cases of HAVE_LLVM for -fno-strict-aliasing.

branches: 1.14.2;
remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

branches: 1.13.4;
Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

branches: 1.12.6;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.20;
sprinkle some -fno-strict-aliasing and -Wno-pointer-sign with GCC4.

use NETBSDSRCDIR as appropriate

Merge with Lite2 + local changes

enable WARNS=1 by default, but disable in unclean 3rd party code

Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

convert to new RCS Id conventions; reduce my headache

specify man pages the new way.

do not need -I/sys

X compilation

branches: 1.1.1;
Update from 4.4-Lite, with local changes.