------- Comment #2 from kkojima at gcc dot gnu dot org 2006-01-02 05:13 -------
It looks an SH target specific problem.
CONSTRAINT_LEN in config/sh/sh.h of 3.4/4.0 checks the wrong
constraints and returns -1 for them. This causes an infinite
loop in parse_input_constraint whick has a loop like:
for (j = 0; j < c_len; j += CONSTRAINT_LEN (constraint[j], constraint+j))
...
for the testcase in #1. It seems that the above check
is to confirm the validity of the constraints which were
introduced when some SH single character constraints were
renamed to multiple character ones and that check was removed
on 4.1/trunk but it's simply forgotten to remove on the older
branches.
I'll propose a patch after the usual tests on branches.
It will take several days.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25613
