R @4.3.0 fails to build on Tiger: datetime.c: error: void value not ignored as it ought to be

[barracuda156]

/opt/local/bin/gcc-apple-4.2 -std=gnu99 -I../../src/extra  -I. -I../../src/include -I../../src/include -I/opt/local/include -isystem/opt/local/include/LegacySupport -I/opt/local/include -I../../src/nmath -DHAVE_CONFIG_H    -fPIC  -pipe -Os -arch ppc  -c cum.c -o cum.o
/opt/local/bin/gcc-apple-4.2 -std=gnu99 -I../../src/extra  -I. -I../../src/include -I../../src/include -I/opt/local/include -isystem/opt/local/include/LegacySupport -I/opt/local/include -I../../src/nmath -DHAVE_CONFIG_H    -fPIC  -pipe -Os -arch ppc  -c dcf.c -o dcf.o
/opt/local/bin/gcc-apple-4.2 -std=gnu99 -I../../src/extra  -I. -I../../src/include -I../../src/include -I/opt/local/include -isystem/opt/local/include/LegacySupport -I/opt/local/include -I../../src/nmath -DHAVE_CONFIG_H    -fPIC  -pipe -Os -arch ppc  -c datetime.c -o datetime.o
datetime.c: In function 'reset_tz':
datetime.c:760: error: void value not ignored as it ought to be
make[3]: *** [datetime.o] Error 1
make[3]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_R/R/work/R-4.3.0/src/main'
make[2]: *** [R] Error 2
make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_R/R/work/R-4.3.0/src/main'
make[1]: *** [R] Error 1
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_R/R/work/R-4.3.0/src'
make: *** [R] Error 1

This error did not occur with 4.2.3, it is also unrelated to configure error reported in #67251