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| author | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2012-06-01 08:47:06 +0000 |
|---|---|---|
| committer | Jonathan Wakely <redi@gcc.gnu.org> | 2012-06-01 09:47:06 +0100 |
| commit | c3a43311c13fb31610cdc82f8600dd0c254169c9 (patch) | |
| tree | 0fb55207949a10eea3593adbe133ce005a42b5c9 /gcc | |
| parent | d168aaeed942c2193519d7b732443972a32c04fa (diff) | |
| download | gcc-c3a43311c13fb31610cdc82f8600dd0c254169c9.zip gcc-c3a43311c13fb31610cdc82f8600dd0c254169c9.tar.gz gcc-c3a43311c13fb31610cdc82f8600dd0c254169c9.tar.bz2 | |
re PR c++/50134 (-Wmissing-prototypes doesn't work for C++)
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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 12 |
2 files changed, 16 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 25bf994..1b9b7a7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 3ad07f3..eb582b3 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -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 |