diff options
Diffstat (limited to 'gcc/doc/extend.texi')
-rw-r--r-- | gcc/doc/extend.texi | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 8a6ea17b990..9f5a373604c 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -1911,10 +1911,8 @@ You can use @code{__declspec(dllexport)} as a synonym for compilers. On systems that support the @code{visibility} attribute, this -attribute also implies ``default'' visibility, unless a -@code{visibility} attribute is explicitly specified. You should avoid -the use of @code{dllexport} with ``hidden'' or ``internal'' -visibility; in the future GCC may issue an error for those cases. +attribute also implies ``default'' visibility. It is an error to +explicitly specify any other visibility. Currently, the @code{dllexport} attribute is ignored for inlined functions, unless the @option{-fkeep-inline-functions} flag has been @@ -1935,14 +1933,18 @@ the @option{--export-all} linker flag. On Microsoft Windows and Symbian OS targets, the @code{dllimport} attribute causes the compiler to reference a function or variable via a global pointer to a pointer that is set up by the DLL exporting the -symbol. The attribute implies @code{extern} storage. On Microsoft -Windows targets, the pointer name is formed by combining @code{_imp__} -and the function or variable name. +symbol. The attribute implies @code{extern}. On Microsoft Windows +targets, the pointer name is formed by combining @code{_imp__} and the +function or variable name. You can use @code{__declspec(dllimport)} as a synonym for @code{__attribute__ ((dllimport))} for compatibility with other compilers. +On systems that support the @code{visibility} attribute, this +attribute also implies ``default'' visibility. It is an error to +explicitly specify any other visibility. + Currently, the attribute is ignored for inlined functions. If the attribute is applied to a symbol @emph{definition}, an error is reported. If a symbol previously declared @code{dllimport} is later defined, the |