On 04/11/15 13:13, Jakub Jelinek wrote:
On Mon, Jul 06, 2015 at 05:38:35PM +0100, Alan Lawrence wrote:
Trying to push these now (svn!), patch 2 is going first.
I realize my second iteration of patch 1/2, dropped the testcases from the
first version. Okay to include those as per
https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00215.html ?
FYI, it seems that (most likely) the PR65956 changes on gcc-5-branch
broke libgnat ABI compatibility on arm - it seems that getsubs.adb
from macrosub proglet (and others) are during make check compiled/linked
with system gnatmake/gcc, but the program is run at runtime
against the new libgnat-5.so. If I run it manually against
system libgnat, it works, otherwise it hangs, when Fill_Table from
getsubs.adb calls Get_Line, and indeed it looks like the argument passing
for Get_Line changed and on the callee side it thinks Item (which is 400
chars string) has random (and in the hanging case negative) number of chars
in it.
Jakub
Sorry Jakub, can you clarify please, how to reproduce this failure? I've just
bootstrapped gcc-5-branch with ada and run the Ada testsuite, which has build me
gcc/ada/rts/libgnat{.a,.so,-5.so}, and I see all tests passing. (Same with
--disable-bootstrap FWIW.)
It seems plausible that Ada would be the language affected by the ABI change,
obviously it would be somewhat ironic that we broke intercompatibility with
gcc's own libgnat but not against libgnat prior to the change...
Thanks,
Alan
