diff options
Diffstat (limited to 'ndk/platforms/android-8/include/wchar.h')
| -rw-r--r-- | ndk/platforms/android-8/include/wchar.h | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/ndk/platforms/android-8/include/wchar.h b/ndk/platforms/android-8/include/wchar.h index b9c7b0b48..e67b0be73 100644 --- a/ndk/platforms/android-8/include/wchar.h +++ b/ndk/platforms/android-8/include/wchar.h @@ -70,9 +70,41 @@ typedef enum { WC_TYPE_MAX } wctype_t; -#define WCHAR_MAX 255 -#define WCHAR_MIN 0 +/* TECHNICAL NOTE: This is tricky! + * + * Due to the following inclusion chain: + * <wchar.h> -> <stdio.h> -> <sys/types.h> -> <stdint.h> + * + * WCHAR_MIN / WCHAR_MAX will already be defined to INT32_MIN / INT32_MAX + * when reaching this line in the following cases: + * - Compiling C source code. + * - Compiling C++ source code AND having __STDC_LIMIT_MACROS defined. + * + * When _WCHAR_IS_8BIT is defined, it should emulate the old behaviour. + * which was to set the values to 0 and 255, respectively. + */ +#ifndef WCHAR_MAX +# ifdef _WCHAR_IS_8BIT +# define WCHAR_MAX 255 +# define WCHAR_MIN 0 +# else +/* Same values as INT32_MIN/INT32_MAX, without including <stdint.h> */ +# define WCHAR_MAX (2147483647) +# define WCHAR_MIN (-1-2147483647) +# endif +#endif + +/* Similarly, WEOF used to be defined as simply -1, which is + * invalid (the standard mandates that the expression must have wint_t + * type). There is no difference in C, but there is one in C++!! + * + * Revert to the old broken behaviour is _WCHAR_IS_8BIT is defined. + */ +#ifdef _WCHAR_IS_8BIT #define WEOF (-1) +#else +#define WEOF ((wint_t)-1) +#endif extern wint_t btowc(int); extern int fwprintf(FILE *, const wchar_t *, ...); |