From 2fbebc713bf06661a0181a47a096b8d2f5770453 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Fri, 24 Sep 2004 21:29:55 +0100 Subject: [PATCH] re PR c/12802 (-fms-extensions documentation problem) PR c/12802 * doc/extend.texi (Unnamed Fields): Remove "." from end of long title. Document interaction with -fms-extensions. * doc/invoke.texi (-fms-extensions): Refer to Unnamed Fields section. From-SVN: r88071 --- gcc/ChangeLog | 8 ++++++++ gcc/doc/extend.texi | 11 ++++++++++- gcc/doc/invoke.texi | 4 ++++ 3 files changed, 22 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 52be1847a04..ddfa56b1440 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2004-09-24 Joseph S. Myers + + PR c/12802 + * doc/extend.texi (Unnamed Fields): Remove "." from end of long + title. Document interaction with -fms-extensions. + * doc/invoke.texi (-fms-extensions): Refer to Unnamed Fields + section. + 2004-09-24 Joseph S. Myers PR c/12713 diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index f7f52f186b0..ded154fd318 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -8308,7 +8308,7 @@ multiple @code{#pragma pack(@var{n})} instances and finalized by a single @end enumerate @node Unnamed Fields -@section Unnamed struct/union fields within structs/unions. +@section Unnamed struct/union fields within structs/unions @cindex struct @cindex union @@ -8348,6 +8348,15 @@ It is ambiguous which @code{a} is being referred to with @samp{foo.a}. Such constructs are not supported and must be avoided. In the future, such constructs may be detected and treated as compilation errors. +@opindex fms-extensions +Unless @option{-fms-extensions} is used, the unnamed field must be a +structure or union definition without a tag (for example, @samp{struct +@{ int a; @};}). If @option{-fms-extensions} is used, the field may +also be a definition with a tag such as @samp{struct foo @{ int a; +@};}, a reference to a previously defined structure or union such as +@samp{struct foo;}, or a reference to a @code{typedef} name for a +previously defined structure or union type. + @node Thread-Local @section Thread-Local Storage @cindex Thread-Local Storage diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index e86677d3ecc..33d7b983400 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1223,6 +1223,10 @@ freestanding and hosted environments. @opindex fms-extensions Accept some non-standard constructs used in Microsoft header files. +Some cases of unnamed fields in structures and unions are only +accepted with this option. @xref{Unnamed Fields,,Unnamed struct/union +fields within structs/unions}, for details. + @item -trigraphs @opindex trigraphs Support ISO C trigraphs. The @option{-ansi} option (and @option{-std} -- 2.30.2