make check in 2.3.5 hangs, after giving the following output:

gcc -g -O2 -Wall -o .libs/uri-test uri-test.o  ../glib/.libs/libglib-2.0.so
-Wl,--rpath -Wl,/usr/local/lib
creating uri-test
if gcc -DHAVE_CONFIG_H -I. -I. -I.. -I.. -I../glib -I../gmodule
-DG_ENABLE_DEBUG  -pthread  -g -O2 -Wall -MT markup-test.o -MD -MP -MF
".deps/markup-test.Tpo" \  -c -o markup-test.o `test -f 'markup-test.c' ||
echo './'`markup-test.c; \
then mv -f ".deps/markup-test.Tpo" ".deps/markup-test.Po"; \
else rm -f ".deps/markup-test.Tpo"; exit 1; \
fi
/bin/sh ../libtool --mode=link gcc  -g -O2 -Wall   -o markup-test 
markup-test.o  ../glib/libglib-2.0.la
gcc -g -O2 -Wall -o .libs/markup-test markup-test.o 
../glib/.libs/libglib-2.0.so -Wl,--rpath -Wl,/usr/local/lib
creating markup-test
make[4]: Leaving directory `/tmp/glib-2.3.5/tests'
make  check-TESTS
make[4]: Entering directory `/tmp/glib-2.3.5/tests'
PASS: atomic-test
PASS: array-test
PASS: cxx-test
whee! created pid: 13963 (ttl 10)
whee! created pid: 13964 (ttl 20)

Output of "ps -ax" in another terminal:

27507 pts/2    S      0:00 rpmbuild -bb /usr/src/redhat/SPECS/glib2.spec
27517 pts/2    S      0:00 /bin/sh -e /var/tmp/rpm-tmp.40334
13840 pts/2    S      0:00 make check
13841 pts/2    S      0:00 make check-recursive
13842 pts/2    S      0:00 /bin/sh -c set fnord $MAKEFLAGS; amf=$2; 
dot_seen=no13869 pts/2    S      0:00 /bin/sh -c set fnord $MAKEFLAGS;
amf=$2;  dot_seen=no13870 pts/2    S      0:00 make check
13871 pts/2    S      0:00 /bin/sh -c set fnord $MAKEFLAGS; amf=$2; 
dot_seen=no15083 pts/2    S      0:00 make check-am
19296 pts/2    S      0:00 make check-TESTS
19297 pts/2    S      0:00 /bin/sh -c failed=0; all=0; xfail=0; xpass=0;
skip=0;19358 pts/2    S      0:00
/usr/src/redhat/BUILD/glib-2.3.5/tests/.libs/lt-child19380 pts/2    Z     
0:00 [lt-child-test <defunct>]
19381 pts/2    Z      0:00 [lt-child-test <defunct>]

(the rpmbuild simply does make && make check). It seems like child-test
isn't working properly? I noticed #134877, which is about child-test too,
but that only affects netBSD, it seems. The patch on there applied to my
source. It still hangs when running make check, though.

System:
Red Hat 9.0 base system
Toshiba Satellite Pro 6000
Linux-2.4.24