Between 20100903 and 20100908, mainline bootstrap with Ada started failing when compiling the 32-bit g-debpoo.adb:
% /var/gcc/gcc-4.6.0-20100908/11-gcc-gas/./gcc/xgcc -B/var/gcc/gcc-4.6.0-20100908/11-gcc-gas/./gcc/ -B/usr/local/sparc-sun-solaris2.11/bin/ -B/usr/local/sparc-sun-solaris2.11/lib/ -isystem /usr/local/sparc-sun-solaris2.11/include -isystem /usr/local/sparc-sun-solaris2.11/sys-include -c -g -O2 -fPIC -W -Wall -gnatpg g-debpoo.adb -o g-debpoo.o -save-temps g-debpoo.s: Assembler messages: g-debpoo.s:5362: Error: undefined symbol `.LL363' in operation g-debpoo.s:5363: Error: undefined symbol `.LL363' in operation -- Summary: [4.6 regression] Reference to undefined label building libada no Solaris 2/SPARC Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ro at gcc dot gnu dot org GCC build triplet: sparc-sun-solaris2* GCC host triplet: sparc-sun-solaris2* GCC target triplet: sparc-sun-solaris2* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45612