http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52110
--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> 2012-02-03 16:21:17 UTC --- Removing declaration at s-taspri-hpux-dce.ads, I get: /xxx/gnu/gcc/objdir/./gcc/xgcc -B/xxx/gnu/gcc/objdir/./gcc/ -B/opt/gnu/gcc/gcc-4.7/hppa1.1-hp-hpux10.20/bin/ -B/opt/gnu/gcc/gcc-4.7/hppa1.1-hp-hpux10.20/lib/ -isystem /opt/gnu/gcc/gcc-4.7/hppa1.1-hp-hpux10.20/include -isystem /opt/gnu/gcc/gcc-4.7/hppa1.1-hp-hpux10.20/sys-include -c -g -O2 -W -Wall -gnatpg -nostdinc a-dynpri.adb -o a-dynpri.o s-taspri.ads:105:22: atomic access to "Thread" cannot be guaranteed make[5]: *** [a-dynpri.o] Error 1