https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82914
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|RESOLVED |ASSIGNED
Last reconfirmed| |2018-02-02
CC| |msebor at gcc dot gnu.org
Resolution|INVALID |---
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot
gnu.org
Ever confirmed|0 |1
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Paul Eggert from comment #4)
> Here, GCC says the alignment of 'b' is 1, not 8. What happened to the
> attribute?
GCC silently drops it, without validating it. For instance, this is accepted
as well:
struct s { char mem; };
struct __attribute__ ((foobar))
s b;
I view it as a bug. At a minimum, GCC should point out that it's ignoring the
attribute like other compilers do, such as Clang:
warning: unknown attribute 'foobar' ignored [-Wunknown-attributes]
I happened to notice this bug while testing a fix for pr84108. It seems that a
simple fix is fairly straightforward so hopefully Richard won't be offended if
I reopen this bug, assign it to myself, and submit my patch in stage 1 of GCC
9.
