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| author | Mark Adler <madler@alumni.caltech.edu> | 2011-10-18 23:05:37 -0700 |
|---|---|---|
| committer | Mark Adler <madler@alumni.caltech.edu> | 2011-10-18 23:05:37 -0700 |
| commit | 5ab9f47745fe9353291b217f705086b6070575d5 (patch) | |
| tree | 0a6c69f912f56cdbd36328cc67e4637bde6208b9 /zconf.h.cmakein | |
| parent | 5b48d061c8c46bc19e6ad965157440880e5708b9 (diff) | |
| download | zlib-5ab9f47745fe9353291b217f705086b6070575d5.tar.gz | |
Add #define ZLIB_CONST option to use const in the z_stream interface.
This permits compilers to check for the proper treatment of next_in and
msg in the z_stream structure. This is an option instead of the default
in order to preserve backward compatibility. Some applications make use
of the z_stream structure outside of zlib, and perform operations such
as free(strm->next_in), which would not be permitted when next_in is
const. The #define ZLIB_CONST needs to precede the #include "zlib.h">,
in order to make next_in and msg const pointers in the z_stream type.
Diffstat (limited to 'zconf.h.cmakein')
| -rw-r--r-- | zconf.h.cmakein | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/zconf.h.cmakein b/zconf.h.cmakein index 8450547..0b880ad 100644 --- a/zconf.h.cmakein +++ b/zconf.h.cmakein @@ -216,6 +216,12 @@ # endif #endif +#if defined(ZLIB_CONST) && !defined(z_const) +# define z_const const +#else +# define z_const +#endif + /* Some Mac compilers merge all .h files incorrectly: */ #if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__) # define NO_DUMMY_DECL |