http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55939
Bug #: 55939
Summary: [4.6/4.7/4.8 regression] gcc miscompiles gmp-5.0.5 on
m68k-linux
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: mi...@it.uu.se
Building gmp-5.0.5 for m68k (configure for --host=m68020-unknown-linux), with
gcc 4.6, 4.7, or 4.8, and then running gmp's test suite results in:
make[4]: Entering directory `/home/mikpe/objdir-gmp/tests/mpq'
...
ERROR (check_random test 1): bad mpq_set_d results
3.098073531878046e-120
3.098073531878046e-120
...
1 of 11 tests failed
The failure is 100% repeatable.
Building with gcc-4.5.4 instead eliminates the failure, so this is a
regression.
I don't have a reduced test case yet. I'm going to start a bisection on gcc
trunk to hopefully identify when this regression started.
