forked from minhngoc25a/freetype2
* include/freetype/internal/ftmemory.h (FT_OFFSET): New macro.
Use this for `base + offset' pointer calculations where `base' can be NULL (triggering a sanitizer warning even if the resulting pointer gets never dereferenced since it is undefined behaviour in C). Suggested by Ben Wagner.
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ChangeLog
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ChangeLog
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@ -1,3 +1,14 @@
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2019-11-23 Werner Lemberg <wl@gnu.org>
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* include/freetype/internal/ftmemory.h (FT_OFFSET): New macro.
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Use this for `base + offset' pointer calculations where `base' can
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be NULL (triggering a sanitizer warning even if the resulting
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pointer gets never dereferenced since it is undefined behaviour
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in C).
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Suggested by Ben Wagner.
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2019-11-23 Ben Wagner <bungeman@google.com>
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2019-11-23 Ben Wagner <bungeman@google.com>
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[sfnt] Ensure OTTO fonts have tables (#57285).
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[sfnt] Ensure OTTO fonts have tables (#57285).
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@ -57,6 +57,14 @@ FT_BEGIN_HEADER
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/*************************************************************************/
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/*************************************************************************/
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/* The calculation `NULL + n' is undefined in C. Even if the resulting */
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/* pointer doesn't get dereferenced, this causes warnings with */
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/* sanitizers. */
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/* */
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/* We thus provide a macro that should be used if `base' can be NULL. */
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#define FT_OFFSET( base, count ) ( (base) ? (base) + (count) : NULL )
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/*
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/*
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* C++ refuses to handle statements like p = (void*)anything, with `p' a
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* C++ refuses to handle statements like p = (void*)anything, with `p' a
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* typed pointer. Since we don't have a `typeof' operator in standard C++,
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* typed pointer. Since we don't have a `typeof' operator in standard C++,
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