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bug#29040: Emacs 25 hangs on windows arbitrarily during search of a unic
From: |
Eli Zaretskii |
Subject: |
bug#29040: Emacs 25 hangs on windows arbitrarily during search of a unicode file |
Date: |
Sat, 28 Oct 2017 18:58:28 +0300 |
> Date: Sat, 28 Oct 2017 17:14:14 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 29040@debbugs.gnu.org
>
> I'm not saying that this is a GCC bug. But maybe you are right, and
> the changes in d7038020 exposed this problem.
Actually, I think it was caused by 015f0bb. Does the patch below fix
the problem? Please actually check the alignment of getcjmp, not just
that the crashes went away.
diff --git a/src/thread.c b/src/thread.c
index 6f12d79..2520771 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -26,7 +26,11 @@ along with GNU Emacs. If not, see
<https://www.gnu.org/licenses/>. */
#include "coding.h"
#include "syssignal.h"
-static struct thread_state alignas (GCALIGNMENT) main_thread;
+#define COMMON_MULTIPLE(a, b) \
+ ((a) % (b) == 0 ? (a) : (b) % (a) == 0 ? (b) : (a) * (b))
+#define THREAD_ALIGNMENT COMMON_MULTIPLE (alignof (max_align_t), GCALIGNMENT)
+
+static struct thread_state alignas (THREAD_ALIGNMENT) main_thread;
struct thread_state *current_thread = &main_thread;