[Bug c/2803] casts in asm act as lvalues

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=2803

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The fact that clang doesn't support that just means they have badly implemented
a GNU extension.