A user that uses "info gcc" to look for details about the preprocessor doesn't find them. Example: [Bug c/29994]. The user did "info gcc", was looking for a section that explains all the predefined preprocessor macros, but didn't find it. The reason was that they are in a separate manual.
Nowadays the preprocessor is rarely used on its own. To the user, it appears as part of the compiler. Suggestion: Integrate the parts of cpp.info that don't apply to other C/C++ implementations (such as "Predefined Macros" and "Invocation", and possibly others) into the gcc.info manual. -- Summary: preprocessor documentation is missing from gcc.info Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bruno at clisp dot org GCC build triplet: x86_64-suse-linux GCC host triplet: x86_64-suse-linux GCC target triplet: x86_64-suse-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29999