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http://bugs.alpinelinux.org/issues/6132
https://trac.xiph.org/ticket/2287
patch rebased for libtheory 1.1.1 stable
diff -ru libtheora-1.1.1.orig/lib/encode.c libtheora-1.1.1/lib/encode.c
--- libtheora-1.1.1.orig/lib/encode.c 2009-08-22 18:14:04.000000000 +0000
+++ libtheora-1.1.1/lib/encode.c 2016-09-15 05:27:02.065785527 +0000
@@ -864,6 +864,9 @@
}
static void oc_enc_frame_pack(oc_enc_ctx *_enc){
+ /*musl libc malloc()/realloc() calls might use floating point, so make sure
+ we've cleared the MMX state for them.*/
+ oc_restore_fpu(&_enc->state);
oggpackB_reset(&_enc->opb);
/*Only proceed if we have some coded blocks.
If there are no coded blocks, we can drop this frame simply by emitting a
diff -ru libtheora-1.1.1.orig/lib/decode.c libtheora-1.1.1/lib/decode.c
--- libtheora-1.1.1.orig/lib/decode.c 2009-09-26 20:55:21.000000000 +0000
+++ libtheora-1.1.1/lib/decode.c 2016-09-15 05:29:45.912196850 +0000
@@ -1181,6 +1181,9 @@
static int oc_dec_postprocess_init(oc_dec_ctx *_dec){
+ /*musl libc malloc()/realloc() calls might use floating point, so make sure
+ we've cleared the MMX state for them.*/
+ oc_restore_fpu(&_dec->state);
/*pp_level 0: disabled; free any memory used and return*/
if(_dec->pp_level<=OC_PP_LEVEL_DISABLED){
if(_dec->dc_qis!=NULL){
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