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authorAkira Kakuto <kakuto@fuk.kindai.ac.jp>2017-12-22 04:45:35 +0000
committerAkira Kakuto <kakuto@fuk.kindai.ac.jp>2017-12-22 04:45:35 +0000
commit654a4a3d7e606b35fc8ea690adc28d20cc26ab46 (patch)
tree6f2927aa6d9b74826661e060728923945282935e /Build/source/texk/web2c/xetexdir
parent204e8f2d99d5bb8c6b5a2514d2c95f2f26092e5d (diff)
xetexdir/image/jpegimage.c: if j_info->xdpi and j_info->ydpi are not determined, they are assumed to be 72.0 to avoid division by 0.
git-svn-id: svn://tug.org/texlive/trunk@46118 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/xetexdir')
-rw-r--r--Build/source/texk/web2c/xetexdir/ChangeLog6
-rw-r--r--Build/source/texk/web2c/xetexdir/image/jpegimage.c12
2 files changed, 16 insertions, 2 deletions
diff --git a/Build/source/texk/web2c/xetexdir/ChangeLog b/Build/source/texk/web2c/xetexdir/ChangeLog
index 8cfc5544af1..3735780dd19 100644
--- a/Build/source/texk/web2c/xetexdir/ChangeLog
+++ b/Build/source/texk/web2c/xetexdir/ChangeLog
@@ -1,3 +1,9 @@
+2017-12-22 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ * image/jpegimage.c: If j_info->xdpi and j_info->ydpi are not
+ determined in some JPEG format, they are assumed to be 72.0
+ in order to avoid division by zero.
+
2017-11-07 Jonathan Kew <jfkthame@gmail.com>
* XeTeX_ext.c: Guard against out-of-range result from UTF-8
diff --git a/Build/source/texk/web2c/xetexdir/image/jpegimage.c b/Build/source/texk/web2c/xetexdir/image/jpegimage.c
index 643eae6b9fa..6b43fae194c 100644
--- a/Build/source/texk/web2c/xetexdir/image/jpegimage.c
+++ b/Build/source/texk/web2c/xetexdir/image/jpegimage.c
@@ -1,6 +1,6 @@
/****************************************************************************\
Part of the XeTeX typesetting system
- Copyright (c) 1994-2009 by SIL International
+ Copyright (c) 1994-2017 by SIL International
SIL Author(s): Jonathan Kew
@@ -24,7 +24,7 @@
/* This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
- Copyright (C) 2002-2015 by Jin-Hwan Cho and Shunsaku Hirata,
+ Copyright (C) 2002-2017 by Jin-Hwan Cho and Shunsaku Hirata,
the dvipdfmx project team.
Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
@@ -492,5 +492,13 @@ JPEG_scan_file (struct JPEG_info *j_info, FILE *fp)
count++;
}
+/*
+ * If j_info->xdpi, and j_info->ydpi are not yet determined,
+ * they are assumed to be 72.0 to avoid division by zero.
+ */
+ if (j_info->xdpi < 0.1 && j_info->ydpi < 0.1) {
+ j_info->xdpi = j_info->ydpi = 72.0;
+ }
+
return (found_SOFn ? 0 : -1);
}