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re PR c++/50134 (-Wmissing-prototypes doesn't work for C++)

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2012-06-01  Manuel López-Ibáñez  <manu@gcc.gnu.org>
            Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR c++/50134
	* doc/invoke.texi (Warning Options): Explain purpose and differences
	between -Wmissing-prototypes and -Wmissing-declarations.

Co-Authored-By: Jonathan Wakely <jwakely.gcc@gmail.com>

From-SVN: r188103
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Manuel López-Ibáñez 2012-06-01 08:47:06 +00:00 committed by Jonathan Wakely
parent d168aaeed9
commit c3a43311c1
2 changed files with 16 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2012-06-01 Manuel López-Ibáñez <manu@gcc.gnu.org>
Jonathan Wakely <jwakely.gcc@gmail.com>
PR c++/50134
* doc/invoke.texi (Warning Options): Explain purpose and differences
between -Wmissing-prototypes and -Wmissing-declarations.
2012-06-01 Christian Bruel <christian.bruel@st.com>
* gcc.c (save_switch): Add user_p parameter.

12
gcc/doc/invoke.texi
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@ -4416,8 +4416,12 @@ This warning is also enabled by @option{-Wextra}.
@opindex Wno-missing-prototypes
Warn if a global function is defined without a previous prototype
declaration. This warning is issued even if the definition itself
provides a prototype. The aim is to detect global functions that
are not declared in header files.
provides a prototype. Use this option to detect global functions
that do not have a matching prototype declaration in a header file.
This option is not valid for C++ because all function declarations
provide prototypes and a non-matching declaration will declare an
overload rather than conflict with an earlier declaration.
Use @option{-Wmissing-declarations} to detect missing declarations in C++.
@item -Wmissing-declarations
@opindex Wmissing-declarations
@ -4425,7 +4429,9 @@ are not declared in header files.
Warn if a global function is defined without a previous declaration.
Do so even if the definition itself provides a prototype.
Use this option to detect global functions that are not declared in
header files. In C++, no warnings are issued for function templates,
header files. In C, no warnings are issued for functions with previous
non-prototype declarations; use @option{-Wmissing-prototype} to detect
missing prototypes. In C++, no warnings are issued for function templates,
or for inline functions, or for functions in anonymous namespaces.
@item -Wmissing-field-initializers