[Swan-commit] Changes to ref refs/heads/master

[Andrew Cagney]

New commits:
commit 52c2fa46253b31aa1548542a7c2d0d086020a3a1
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri Jun 21 13:31:58 2019 -0400

    chunks: replace CHUNK0() with THING_AS_CHUNK() - generates a warning when THING is constant
    
    Convert writeable THING to a writeable CHUNK.  When compiled with GCC
    (at least) and THING is read-only, a warning will be generated.
    
    This works because GCC doesn't like implictly converting a 'const'
    &THING actual parameter to the non-const 'void*' formal parameter.
    Using an explicit cast (such as in a static initializer) suppresses
    this warning.
    
    For a read-only CHUNK like object, see THING_AS_SHUNK().