https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93121
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48883
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48883&action=edit
gcc11-pr93121-wip.patch
Untested WIP on this (well, only the compiler builtin).
What needs still doing is
1) handle bitfields (both in the middle-end in native_encode_initializer and in
2) punt on trying to read padding bits - perhaps if arg is a CONSTRUCTOR
compute
in addition to the memory representation a mask which bits are uninitialized,
and diagnose if we try to read from those
3) verify handling of flexible array members and zero length arrays
