With current Creduce trunk I get:
...
===< pass_clang :: template-non-type-arg-to-int >===
(15.4 %, 36484 bytes)
=======================================
OOPS: pass_clang::template-non-type-arg-to-int failed to
modify the test case, which means you have
encountered a bug in C-Reduce. Please consider
mailing /var/tmp/creduce_bug_378116 to
creduce-bugs@flux.utah.edu and we will try to fix
the bug. Please also let us know what version of
C-Reduce you are using and include any other
details that may help us reproduce the problem.
=======================================
Died at /home/markus/creduce/creduce/creduce line 530.