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Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index f112abe..51c6546 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -228,7 +228,7 @@ in the following sections. -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 +-Wsign-compare -Wstrict-aliasing -Wswitch -Wswitch-default -Wswitch-enum @gol -Wsystem-headers -Wtrigraphs -Wundef -Wuninitialized @gol -Wunknown-pragmas -Wunreachable-code @gol -Wunused -Wunused-function -Wunused-label -Wunused-parameter @gol @@ -2341,6 +2341,14 @@ GCC@. If this command line option is used, warnings will even be issued for unknown pragmas in system header files. This is not the case if the warnings were only enabled by the @option{-Wall} command line option. +@item -Wstrict-aliasing +@opindex Wstrict-aliasing +This option is only active when @option{-fstrict-aliasing} is active. +It warns about code which might break the strict aliasing rules that the +compiler is using for optimization. The warning does not catch all +cases, but does attempt to catch the more common pitfalls. It is +included in @option{-Wall}. + @item -Wall @opindex Wall All of the above @samp{-W} options combined. This enables all the |