isinf and type-pun warning/error on OSF guile 1.8.7

[Jay K]

libtool: compile:  gcc -DHAVE_CONFIG_H -I.. -I/home/jayk/src/guile-1.8.7 -I.. 
-mieee -mieee -D_REENTRANT -pthread -g -O2 -Wall -Wmissing-prototypes -Werror 
-MT libguile_la-numbers.lo -MD -MP -MF .deps/libguile_la-numbers.Tpo -c 
/home/jayk/src/guile-1.8.7/libguile/numbers.c  -DPIC -o 
.libs/libguile_la-numbers.o
cc1: warnings being treated as errors
/home/jayk/src/guile-1.8.7/libguile/numbers.c: In function 'xisinf':
/home/jayk/src/guile-1.8.7/libguile/numbers.c:144: error: implicit declaration 
of function 'isinf'
/home/jayk/src/guile-1.8.7/libguile/numbers.c: In function 'guile_ieee_init':
/home/jayk/src/guile-1.8.7/libguile/numbers.c:623: error: dereferencing 
type-punned pointer will break strict-aliasing rules
/home/jayk/src/guile-1.8.7/libguile/numbers.c:654: error: dereferencing 
type-punned pointer will break strict-aliasing rules
make[3]: *** [libguile_la-numbers.lo] Error 1
make[3]: Leaving directory `/home/jayk/obj/guile/libguile'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/jayk/obj/guile/libguile'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jayk/obj/guile'
make: *** [all] Error 2
bash-4.1$ 


I hacked these bogusly to fix.
Put "0 &&" on the first #if and removed -Werror from libguile/Makefile for the 
second.
I couldn't find isinf in any header. 
  Oops, I guess I should have just removed -Wmissing-prototypes. I'll try that.


I recall seeing the same problem on Irix, where autoconf does a link check
and compiles without -Wmissing-prototype so it passes, because the function
does exist somewhere. Autoconf checks need to more closely resemble
how later compilation will occur.


It is *possible* I changed gcc from 4.5.0 to 4.3.5 while this was compiling, 
but I don't think so.


Same thing in make check:


/home/jayk/src/guile-1.8.7/test-suite/standalone/test-conversion.c:859: error: 
dereferencing type-punned pointer will break strict-aliasing rules
make[4]: *** [test_conversion-test-conversion.o] Error 1


I will try ftp://alpha.gnu.org/gnu/guile/guile-1.9.11.tar.gz.


 - Jay