------- Additional Comments From wilson at gcc dot gnu dot org 2005-04-19 20:41 ------- Created an attachment (id=8684) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8684&action=view) synthetic IA-64 testcase to generate NaT consumption fault
Compile this with -O, and it will fail with gcc-2.96 and gcc-4.0.0. We get an illegal instruction signal. It works with gcc-3.0 and gcc-3.3 and presumably with every other gcc-3.x release. If you use gcc-4.0.0 to compile with -O -S, and look at the assembly code, you can see that r8 is being used uninitialized, which fails if r8 happens to have the NaT bit set. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21111
