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Fixes #508
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Add a _cairo_tag_error(fmt, ...) function that is used liked _cairo_error()
but allows an error message to be specified. When CAIRO_DEBUG_TAG is defined
the error is printed.
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When strtod cannot do anything, it returns zero and sets the end pointer
to the beginning of the string. This commit changes the code in
parse_float() to treat this case as an error.
Without the fix from commit b7d67433b7c0, this commit turns the error
from an endless loop into a parse error, which is a lot better error
behaviour.
Signed-off-by: Uli Schlachter <psychon@znc.in>
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Found via `codespell -i 3 -w -I ../cairo-word-whitelist.txt -L tim,ned,uint`
Follow up of 12cb59be7da
Reviewed-by: Bryce Harrington <bryce@bryceharrington.org>
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Issue #347
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_cairo_malloc(0) always returns NULL, but has not been used
consistently. This patch replaces many calls to malloc() with
_cairo_malloc().
Fixes: fdo# 101547
CVE: CVE-2017-9814 Heap buffer overflow at cairo-truetype-subset.c:1299
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
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- each annotation was emitted on every page instead of just the page
that contains the annotation
- the document structure did not correctly link to annotation objects
- fix some annotation related memory leaks
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This completes the full set of PDF/PS image filters allowing image
data to be passed though without decompressing then recompresssing in
a less efficient format.
The difficulty with CCITT_FAX is it needs some decoding parameters
that are not stored inside the image data. This is achieved by using
an additional mime type CCITT_FAX_PARAMS that contains the params in
key=value format.
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Converting the link position from cairo to pdf coordinates requires
the page height. Since the link may point to a different page, build
an array of the height of each page and use the target page height for
the conversion.
Don't default to a [0,0] position if "pos" is not specified. PDF
allows a null destination position to be specified which means don't
change the position if the page is already displayed or show top left
if switching to a different page. This is more useful default
particularly for external files where the coordinates (which must be
in PDF coordinates as we don't know the page height) of the top left
corner may not be known.
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