diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index c43260f..104766f 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -498,8 +498,8 @@ Objective-C and Objective-C++ Dialects}. @item C and Objective-C-only Warning Options @gccoptlist{-Wbad-function-cast -Wmissing-declarations --Wmissing-parameter-type -Wmissing-prototypes -Wnested-externs --Wold-style-declaration -Wold-style-definition +-Wmissing-parameter-type -Wmissing-prototypes -Wmissing-variable-declarations +-Wnested-externs -Wold-style-declaration -Wold-style-definition -Wstrict-prototypes -Wtraditional -Wtraditional-conversion -Wdeclaration-after-statement -Wpointer-sign} @@ -9611,6 +9611,13 @@ provide prototypes and a non-matching declaration declares an overload rather than conflict with an earlier declaration. Use @option{-Wmissing-declarations} to detect missing declarations in C++. +@opindex Wmissing-variable-declarations +@opindex Wno-missing-variable-declarations +@item -Wmissing-variable-declarations @r{(C and Objective-C only)} +Warn if a global variable is defined without a previous declaration. +Use this option to detect global variables that do not have a matching +extern declaration in a header file. + @opindex Wmissing-declarations @opindex Wno-missing-declarations @item -Wmissing-declarations |