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Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index f7daa02..8f375b7 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -260,6 +260,7 @@ Objective-C and Objective-C++ Dialects}. -Wimplicit -Wimplicit-function-declaration -Wimplicit-int @gol -Winit-self -Winline -Wno-int-conversion @gol -Wno-int-to-pointer-cast -Wno-invalid-offsetof @gol +-Wnull-dereference @gol -Winvalid-pch -Wlarger-than=@var{len} -Wunsafe-loop-optimizations @gol -Wlogical-op -Wlogical-not-parentheses -Wlong-long @gol -Wmain -Wmaybe-uninitialized -Wmemset-transposed-args @gol @@ -4156,6 +4157,16 @@ In order to get a warning about an unused function parameter, you must either specify @option{-Wextra -Wunused} (note that @option{-Wall} implies @option{-Wunused}), or separately specify @option{-Wunused-parameter}. +@item -Wnull-dereference +@opindex Wnull-dereference +@opindex Wno-null-dereference +Warn if the compiler detects paths that trigger erroneous or +undefined behavior due to dereferencing a null pointer. This option +is only active when @option{-fdelete-null-pointer-checks} is active, +which is enabled by optimizations in most targets. The precision of +the warnings depends on the optimization options used. This option is +enabled by @option{-Wall}. + @item -Wuninitialized @opindex Wuninitialized @opindex Wno-uninitialized |