build failures of master on netbsd/5 amd64

[Greg Troxel]

I ran 'gmake -k' to get all the warnings at once.  I think there are
just two groups:


gmake  all-recursive
gmake[1]: Entering directory `/home/gdt/BUILD-GUILE-master/guile'
gmake[2]: Entering directory `/home/gdt/BUILD-GUILE-master/guile/libguile'
gmake  all-am
gmake[3]: Entering directory `/home/gdt/BUILD-GUILE-master/guile/libguile'
/bin/ksh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H   
-DBUILDING_LIBGUILE=1 -I.. -I.. -I../lib -I../lib -I/usr/pkg/include 
-I/usr/y0/include -I/usr/pkg/include -I/usr/y0/include -pthread -Wall 
-Wmissing-prototypes -Werror -fvisibility=hidden -g -O2 -MT 
libguile_la-deprecated.lo -MD -MP -MF .deps/libguile_la-deprecated.Tpo -c -o 
libguile_la-deprecated.lo `test -f 'deprecated.c' || echo './'`deprecated.c
 gcc -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=1 -I.. -I.. -I../lib -I../lib 
-I/usr/pkg/include -I/usr/y0/include -I/usr/pkg/include -I/usr/y0/include 
-pthread -Wall -Wmissing-prototypes -Werror -fvisibility=hidden -g -O2 -MT 
libguile_la-deprecated.lo -MD -MP -MF .deps/libguile_la-deprecated.Tpo -c 
deprecated.c  -fPIC -DPIC -o .libs/libguile_la-deprecated.o
cc1: warnings being treated as errors
deprecated.c: In function 'scm_gentemp':
deprecated.c:1092: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
gmake[3]: *** [libguile_la-deprecated.lo] Error 1
/bin/ksh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H   
-DBUILDING_LIBGUILE=1 -I.. -I.. -I../lib -I../lib -I/usr/pkg/include 
-I/usr/y0/include -I/usr/pkg/include -I/usr/y0/include -pthread -Wall 
-Wmissing-prototypes -Werror -fvisibility=hidden -g -O2 -MT libguile_la-vm.lo 
-MD -MP -MF .deps/libguile_la-vm.Tpo -c -o libguile_la-vm.lo `test -f 'vm.c' || 
echo './'`vm.c
 gcc -DHAVE_CONFIG_H -DBUILDING_LIBGUILE=1 -I.. -I.. -I../lib -I../lib 
-I/usr/pkg/include -I/usr/y0/include -I/usr/pkg/include -I/usr/y0/include 
-pthread -Wall -Wmissing-prototypes -Werror -fvisibility=hidden -g -O2 -MT 
libguile_la-vm.lo -MD -MP -MF .deps/libguile_la-vm.Tpo -c vm.c  -fPIC -DPIC -o 
.libs/libguile_la-vm.o
cc1: warnings being treated as errors
In file included from vm-engine.c:139,
                 from vm.c:315:
vm-i-scheme.c: In function 'vm_regular_engine':
vm-i-scheme.c:437: warning: comparison is always true due to limited range of 
data type
vm-i-scheme.c:437: warning: comparison is always true due to limited range of 
data type
vm-i-scheme.c:439: warning: comparison is always true due to limited range of 
data type
vm-i-scheme.c:439: warning: comparison is always true due to limited range of 
data type
In file included from vm-engine.c:139,
                 from vm.c:323:
vm-i-scheme.c: In function 'vm_debug_engine':
vm-i-scheme.c:437: warning: comparison is always true due to limited range of 
data type
vm-i-scheme.c:437: warning: comparison is always true due to limited range of 
data type
vm-i-scheme.c:439: warning: comparison is always true due to limited range of 
data type
vm-i-scheme.c:439: warning: comparison is always true due to limited range of 
data type
gmake[3]: *** [libguile_la-vm.lo] Error 1

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