diff options
Diffstat (limited to 'newlib/libc')
| -rw-r--r-- | newlib/libc/include/_ansi.h | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/newlib/libc/include/_ansi.h b/newlib/libc/include/_ansi.h index e584ec385..86cb82b35 100644 --- a/newlib/libc/include/_ansi.h +++ b/newlib/libc/include/_ansi.h @@ -113,21 +113,24 @@ to emit the function body unless the address is explicitly taken. However this behaviour is changing to match the C99 standard, which uses 'extern inline' to indicate that the - function body *must* be emitted. If we are using GCC, but do - not have the new behaviour, we need to use extern inline; if - we are using a new GCC with the C99-compatible behaviour, or - a non-GCC compiler (which we will have to hope is C99, since - there is no other way to achieve the effect of omitting the - function if it isn't referenced) we just use plain 'inline', - which c99 defines to mean more-or-less the same as the Gnu C - 'extern inline'. */ + function body *must* be emitted. Likewise, a function declared + without either 'extern' or 'static' defaults to extern linkage + (C99 6.2.2p5), and the compiler may choose whether to use the + inline version or call the extern linkage version (6.7.4p6). + If we are using GCC, but do not have the new behaviour, we need + to use extern inline; if we are using a new GCC with the + C99-compatible behaviour, or a non-GCC compiler (which we will + have to hope is C99, since there is no other way to achieve the + effect of omitting the function if it isn't referenced) we use + 'static inline', which c99 defines to mean more-or-less the same + as the Gnu C 'extern inline'. */ #if defined(__GNUC__) && !defined(__GNUC_STDC_INLINE__) /* We're using GCC, but without the new C99-compatible behaviour. */ #define _ELIDABLE_INLINE extern __inline__ _ATTRIBUTE ((__always_inline__)) #else -/* We're using GCC in C99 mode, or an unknown compiler which +/* We're using GCC in C99 mode, or an unknown compiler which we just have to hope obeys the C99 semantics of inline. */ -#define _ELIDABLE_INLINE __inline__ +#define _ELIDABLE_INLINE static __inline__ #endif #endif /* _ANSIDECL_H_ */ |