On 2/25/21 9:06 AM, Christophe Lyon wrote:
Hi,
On Wed, 24 Feb 2021 at 09:57, Richard Biener via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
On Tue, Feb 23, 2021 at 8:53 PM Martin Sebor via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
Adding attribute access to declarations of functions that take
VLA arguments relies on the front end adding attribute "arg spec"
to each VLA parameter. Like the VLA bounds in attribute access,
the same VLA bounds in attribute "arg spec" can cause trouble
during LTO streaming which expects front end trees to have been
either gimplified or removed. For some reason, with arg spec
the LTO abort happens only with -fpic/-shared and so it escaped
testing in the prior fixes.
The attached patch clears the bounds from attribute "arg spec."
OK.
I committed the patch below as obvious, to avoid failures on targets
where -shared is not supported.
This happens on Arm where the multilibs are not compiled with -fpic
and link fails because
some relocations are generated which are incompatible with -shared.
Thanks!
Martin
commit 01c2ce169a05c8e59c4182796876f7e0754e4b5c
Author: Christophe Lyon <christophe.l...@linaro.org>
Date: Thu Feb 25 15:55:28 2021 +0000
PR middle-end/97172 - ICE: tree code 'ssa_name' is not supported
in LTO streams
Skip test when -shared is not supported.
2021-02-25 Christophe Lyon <christophe.l...@linaro.org>
gcc/testsuite/
PR middle-end/97172
* gcc.dg/pr97172-2.c: Add dg-require-effective-target shared.
diff --git a/gcc/testsuite/gcc.dg/pr97172-2.c b/gcc/testsuite/gcc.dg/pr97172-2.c
index 6f355bb..99cc6c2 100644
--- a/gcc/testsuite/gcc.dg/pr97172-2.c
+++ b/gcc/testsuite/gcc.dg/pr97172-2.c
@@ -3,6 +3,7 @@
{ dg-do link }
{ dg-options "-Wall -flto -fpic -shared" }
{ dg-require-effective-target fpic }
+ { dg-require-effective-target shared }
{ dg-require-effective-target lto } */
#include "pr97172.c"
Christophe
Richard.
Martin
