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Now that GCC's default language dialect for both C and C++ includes support for the standard attribute syntax, we should encourage users to prefer that instead of the legacy GNU syntax, while recognizing that there is a lot of code out there using the latter. This patch updates the discussion in the introduction to the Attributes section with examples showing attribute placement in both syntaxes and focuses the syntax section on the GNU syntax only. (Users can read the C/C++ standards, programming books or tutorials, etc to learn about the standard syntax, so we don't need to document that in detail.) gcc/ChangeLog PR c++/102397 * doc/extend.texi (Attributes): Rewrite and expand discussion of standard vs legacy syntax, with several examples. (Attribute Syntax): Rename section to... (GNU Attribute Syntax): ...this. Prune discussion of standard attribute syntax. Fix cross-references.
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