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a921e04dff
Noticed when looking at bug #950965 but it's not related at all. Fixes an issue with UBSAN and some other notable looking patches from master for correctness. Signed-off-by: Sam James <sam@gentoo.org>
27 lines
996 B
Diff
27 lines
996 B
Diff
https://gitlab.xiph.org/xiph/vorbis/-/commit/bb4047de4c05712bf1fd49b9584c360b8e4e0adf
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From bb4047de4c05712bf1fd49b9584c360b8e4e0adf Mon Sep 17 00:00:00 2001
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From: Tristan Matthews <tmatth@videolan.org>
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Date: Fri, 14 Jun 2024 11:39:26 -0400
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Subject: [PATCH] sharedbook: cast to unsigned to avoid undefined shift
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Fixes #2351
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---
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lib/sharedbook.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/lib/sharedbook.c b/lib/sharedbook.c
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index 444f42b5..7a98b479 100644
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--- a/lib/sharedbook.c
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+++ b/lib/sharedbook.c
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@@ -422,7 +422,7 @@ int vorbis_book_init_decode(codebook *c,const static_codebook *s){
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long lo=0,hi=0;
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for(i=0;i<tabn;i++){
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- ogg_uint32_t word=i<<(32-c->dec_firsttablen);
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+ ogg_uint32_t word=((ogg_uint32_t)i<<(32-c->dec_firsttablen));
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if(c->dec_firsttable[bitreverse(word)]==0){
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while((lo+1)<n && c->codelist[lo+1]<=word)lo++;
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while( hi<n && word>=(c->codelist[hi]&mask))hi++;
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--
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GitLab
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