diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index cedabdf5500..1ab9cb39f98 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -225,7 +225,7 @@ in the following sections. -Wmain -Wmissing-braces -Wmissing-declarations @gol -Wmissing-format-attribute -Wmissing-noreturn @gol -Wno-multichar -Wno-format-extra-args -Wno-format-y2k @gol --Wno-import -Wpacked -Wpadded @gol +-Wno-import -Wnonnull -Wpacked -Wpadded @gol -Wparentheses -Wpointer-arith -Wredundant-decls @gol -Wreturn-type -Wsequence-point -Wshadow @gol -Wsign-compare -Wswitch -Wswitch-default -Wswitch-enum @gol @@ -1842,6 +1842,9 @@ in the selected standard version (but not for @code{strfmon} formats, since those are not in any version of the C standard). @xref{C Dialect Options,,Options Controlling C Dialect}. +Since @option{-Wformat} also checks for null format arguments for +several functions, @option{-Wformat} also implies @option{-Wnonnull}. + @option{-Wformat} is included in @option{-Wall}. For more control over some aspects of format checking, the options @option{-Wno-format-y2k}, @option{-Wno-format-extra-args}, @option{-Wno-format-zero-length}, @@ -1896,6 +1899,14 @@ Enable @option{-Wformat} plus format checks not included in @option{-Wformat}. Currently equivalent to @samp{-Wformat -Wformat-nonliteral -Wformat-security}. +@item -Wnonnull +@opindex Wnonnull +Enable warning about passing a null pointer for arguments marked as +requiring a non-null value by the @code{nonnull} function attribute. + +@option{-Wnonnull} is included in @option{-Wall} and @option{-Wformat}. It +can be disabled with the @option{-Wno-nonnull} option. + @item -Wimplicit-int @opindex Wimplicit-int Warn when a declaration does not specify a type. |
