If a has a value of +Infinity, then a program will "hang" (run forever) when
b = x**a is executed. The traceback shows that this occurs in the library routine pow_r4_i4 uname -a ======== Linux devlop 2.6.16.13-4-smp #1 SMP Wed May 3 04:53:23 UTC 2006 x86_64 x86_64 x86_64 GNU/Linux gfortran -v ======= Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: /e_source/gcc-4.1.1/configure --prefix=/add/linux64/gcc4.1.1 Thread model: posix gcc version 4.1.1 -- Summary: Program "Hangs" Product: gcc Version: 4.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ray at ultramarine dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30981