[Bug c++/36159] C++ compiler should issue a warning with missing new operator

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36159

Florian Weimer <fw at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://sourceware.org/bugz
                   |                            |illa/show_bug.cgi?id=6527

--- Comment #19 from Florian Weimer <fw at gcc dot gnu.org> ---
Current (unreleased) glibc usues this:

# define MALLOC_ALIGNMENT       (2 * SIZE_SZ < __alignof__ (long double) \
                                 ? __alignof__ (long double) : 2 * SIZE_SZ)

So the old bug https://sourceware.org/bugzilla/show_bug.cgi?id=6527 is gone.

To my knowledge, this level of alignment is sufficient to cover max_align_t.

These malloc changes are in principle back-portable, but they are a bit on the
risky side because where the definition of MALLOC_ALIGNMENT changes, malloc
allocation patterns (and eventually RSS usage) are affected.