This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• Patch to fix bug. (simdalign-mips64-fix.diff, text/plain, 2019-10-21 01:52:59 +0000, 526 bytes)

Reported in version: 2.0.10
Reported for operating system, platform: OpenBSD, Other

Comments on the original bug report:

On 2019-10-21 01:52:59 +0000, Simon Howard wrote:

Created attachment 3989
Patch to fix bug.

In SDL_cpuinfo.c the default value for SDL_SIMDAlignment is set to 4 unless system-specific CPU features are detected. This can cause SDL_SIMDAlloc() to crash on MIPS64 systems because memory is allocated on 4-byte boundaries, but MIPS64 requires 8-byte alignment (unaligned accesses cause a Bus Error).

Changing to sizeof(void *) should make for a safer default and fixes the crash. Diff attached.

On 2019-10-21 02:19:54 +0000, Ryan C. Gordon wrote:

Your patch is now https://hg.libsdl.org/SDL/rev/568f67c04841, thanks!

--ryan.