From 9bdbc16e3c8f30e32a1f399543d04ac5b1e9c97c Mon Sep 17 00:00:00 2001
From: Nicolas Pena <npm@chromium.org>
Date: Fri, 5 May 2017 16:27:37 -0400
Subject: Fix undefined shift in opj_bio_read
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Bug: chromium:666683
Change-Id: I1c633d82e9ef75dd99ef032b4fc46fe8d3651cd1
Reviewed-on: https://pdfium-review.googlesource.com/5050
Commit-Queue: Nicolás Peña <npm@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
---
 third_party/libopenjpeg20/bio.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'third_party/libopenjpeg20/bio.c')

diff --git a/third_party/libopenjpeg20/bio.c b/third_party/libopenjpeg20/bio.c
index e4edb3724e..e51d0e2b46 100644
--- a/third_party/libopenjpeg20/bio.c
+++ b/third_party/libopenjpeg20/bio.c
@@ -162,6 +162,8 @@ OPJ_UINT32 opj_bio_read(opj_bio_t *bio, OPJ_UINT32 n) {
 	OPJ_UINT32 i;
     OPJ_UINT32 v;
 	v = 0;
+	if (n > 32)
+		n = 32;
 	for (i = n - 1; i < n; i--) {
 		v += opj_bio_getbit(bio) << i;
 	}
-- 
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