[Bug target/66312] [SH] Regression: Bootstrap failure gcc/d/ctfeexpr.dmd.o differs with gcc-4.8/4.9

[glaubitz at physik dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66312

--- Comment #5 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Hello!

Just as a heads up: This particular problem did not occur with the snapshot as
of 2014-12-20 (r218987) and we actually always built gdc in Debian. So it's
definitely a regression as a result of the various changes to the SH target
since r218987 as we discussed earlier.

This problem affects gcc-4.8 and 4.9 and can be avoided by disabling the gdc
package. We have currently disabled gdc in gcc-4.9 and 5 which results in
gcc-4.9 being built (gcc-5 is still not being built for known reasons). But it
_seems_ that this particular bug shows itself now when trying to build gcc-4.9
as the compiler reproducibly segfaults now [1].

I still have to confirm this by trying another buildd, but I have the suspicion
that this segfault is directly related to the aforementioned regression. If
this is actually a bug, building gcc-4.9 on tirpitz should fail within
approximately an hour. I will report back then!

Adrian

> [1] http://buildd.debian-ports.org/status/fetch.php?pkg=gcc-4.9&arch=sh4&ver=4.9.2-21&stamp=1434293660