On 09/14/2015 11:56 AM, Eric Botcazou wrote:

this patchlet makes it possible to get rid of useless EH cleanups generated at
-O0 in Ada for simple constructs involving VLAs:

   declare
     S : String (1 .. N);
   begin
     ...
   end;

by duplicating finally blocks that contain only a stack restore.  Then the EH
optimization machinery (which is also run at -O0) can remove the cleanups.

Tested on x86_64-suse-linux, OK for the mainline?


2015-09-14  Eric Botcazou  <ebotca...@adacore.com>

        * tree-eh.c (lower_try_finally_dup_block): Clear location information
        on stack restore statements.

Does this improve debugging, or is it necessary to have the restores removed?

2015-09-14  Eric Botcazou  <ebotca...@adacore.com>

        * gnat.dg/array24.adb: New test.

How do I compile Ada tests, analogously to "./cc1 tst.c"? I get the following:

./gnat1 tst.adb
fatal error, run-time library not installed correctly
cannot locate file system.ads
compilation abandoned


Bernd

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