forked from minhngoc25a/freetype2
f7c6a06cb7
I am currently trying to compile FreeType for CHERI-extended ISAs
(CHERI-RISC-V and Arm's Morello), but I am getting compiler warnings
from the `FT_UINT_TO_POINTER` macro. When compiling with the CHERI
Clang compiler, not using `uinptr_t` for casts between integers an
pointers results in the following `-Werror` build failures:
```
In file included from .../src/truetype/truetype.c:22:
.../src/truetype/ttgload.c:1925:22: error:
cast from provenance-free integer type to pointer type will
give pointer that can not be dereferenced
[-Werror,-Wcheri-capability-misuse]
node->data = FT_UINT_TO_POINTER( glyph_index );
^
.../include/freetype/internal/compiler-macros.h:79:34: note:
expanded from macro 'FT_UINT_TO_POINTER'
```
* include/freetype/internal/compiler-macros.h (FT_UINT_TO_POINTER):
The ISO C standard compliant fix for this would be to use
`uintptr_t` from `stdint.h`, but I am not sure if this is supported
by the minimum compiler version. Therefore, use the
compiler-defined `__UINTPTR_TYPE__` macro (supported in GCC 4.6+ and
Clang since about 3.0) before checking for `_WIN64` and falling back
to `unsigned long`.
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| .. | ||
| services | ||
| autohint.h | ||
| cffotypes.h | ||
| cfftypes.h | ||
| compiler-macros.h | ||
| ftcalc.h | ||
| ftdebug.h | ||
| ftdrv.h | ||
| ftgloadr.h | ||
| fthash.h | ||
| ftmemory.h | ||
| ftobjs.h | ||
| ftpsprop.h | ||
| ftrfork.h | ||
| ftserv.h | ||
| ftstream.h | ||
| fttrace.h | ||
| ftvalid.h | ||
| psaux.h | ||
| pshints.h | ||
| sfnt.h | ||
| t1types.h | ||
| tttypes.h | ||
| wofftypes.h | ||