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Fix alignment portability problems

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Do not assume that the natural alignment of Lisp objects is a
multiple of GCALIGNMENT.  This improves on the portability of the
recent fix for Bug#29040.
* lib-src/make-docfile.c (close_emacs_globals):
* src/buffer.c (buffer_defaults, buffer_local_symbols):
* src/lisp.h (DEFUN):
* src/thread.c (main_thread):
Use GCALIGNED, not alignas (GCALIGNMENT).
* src/alloc.c (COMMON_MULTIPLE):
Move back here from lisp.h, since it is no longer used elsewhere.
* src/lisp.h (GCALIGNMENT): No longer a macro, since we need not
worry about MSVC.  Omit no-longer-needed consistency check.
* src/thread.c (THREAD_ALIGNMENT): Remove.
This commit is contained in:
Paul Eggert 2017-11-02 13:06:38 -07:00
parent a9f8706fa8
commit 6b08ad5263
5 changed files with 18 additions and 23 deletions
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4
src/thread.c
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@ -26,9 +26,7 @@ along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
#include "coding.h"
#include "syssignal.h"
#define THREAD_ALIGNMENT COMMON_MULTIPLE (alignof (max_align_t), GCALIGNMENT)
static struct thread_state alignas (THREAD_ALIGNMENT) main_thread;
static struct thread_state GCALIGNED main_thread;
struct thread_state *current_thread = &main_thread;