On Wed, Nov 30, 2022 at 02:25:56PM +0000, Qing Zhao wrote: > '-Wstrict-flex-arrays' > Warn about inproper usages of flexible array members according to > the LEVEL of the 'strict_flex_array (LEVEL)' attribute attached to > the trailing array field of a structure if it's available, > otherwise according to the LEVEL of the option > '-fstrict-flex-arrays=LEVEL'. > > This option is effective only when LEVEL is bigger than 0. > Otherwise, it will be ignored with a warning. > > when LEVEL=1, warnings will be issued for a trailing array > reference of a structure that have 2 or more elements if the > trailing array is referenced as a flexible array member. > > when LEVEL=2, in addition to LEVEL=1, additional warnings will be > issued for a trailing one-element array reference of a structure if > the array is referenced as a flexible array member. > > when LEVEL=3, in addition to LEVEL=2, additional warnings will be > issued for a trailing zero-length array reference of a structure if > the array is referenced as a flexible array member. > > At the same time, -Warray-bounds is updated:
Why is there both -Wstrict-flex-arrays and -Warray-bounds? I thought only the latter was going to exist? Are you trying to split code gen (-fstrict-flex-arrays) from warnings? Is that needed? -- Kees Cook
