diff options
Diffstat (limited to 'include/qemu/compiler.h')
| -rw-r--r-- | include/qemu/compiler.h | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h index 6b92710487..296b2fd572 100644 --- a/include/qemu/compiler.h +++ b/include/qemu/compiler.h @@ -28,12 +28,6 @@ #define QEMU_SENTINEL __attribute__((sentinel)) -#if QEMU_GNUC_PREREQ(4, 3) -#define QEMU_ARTIFICIAL __attribute__((always_inline, artificial)) -#else -#define QEMU_ARTIFICIAL -#endif - #if defined(_WIN32) # define QEMU_PACKED __attribute__((gcc_struct, packed)) #else @@ -119,6 +113,10 @@ #define GCC_FMT_ATTR(n, m) #endif +#ifndef __has_warning +#define __has_warning(x) 0 /* compatibility with non-clang compilers */ +#endif + #ifndef __has_feature #define __has_feature(x) 0 /* compatibility with non-clang compilers */ #endif @@ -127,7 +125,7 @@ #define __has_builtin(x) 0 /* compatibility with non-clang compilers */ #endif -#if __has_builtin(__builtin_assume_aligned) || QEMU_GNUC_PREREQ(4, 7) +#if __has_builtin(__builtin_assume_aligned) || !defined(__clang__) #define HAS_ASSUME_ALIGNED #endif @@ -157,6 +155,21 @@ # define QEMU_ERROR(X) #endif +/* + * The nonstring variable attribute specifies that an object or member + * declaration with type array of char or pointer to char is intended + * to store character arrays that do not necessarily contain a terminating + * NUL character. This is useful in detecting uses of such arrays or pointers + * with functions that expect NUL-terminated strings, and to avoid warnings + * when such an array or pointer is used as an argument to a bounded string + * manipulation function such as strncpy. + */ +#if __has_attribute(nonstring) +# define QEMU_NONSTRING __attribute__((nonstring)) +#else +# define QEMU_NONSTRING +#endif + /* Implement C11 _Generic via GCC builtins. Example: * * QEMU_GENERIC(x, (float, sinf), (long double, sinl), sin) (x) |