K 10
svn:author
V 3
bde
K 8
svn:date
V 27
2008-01-17T17:02:11.000000Z
K 7
svn:log
V 613
Add a macro STRICT_ASSIGN() to help avoid the compiler bug that
assignments and casts don't clip extra precision, if any.  The
implementation is to assign to a temporary volatile variable and read
the result back to assign to the original lvalue.

lib/msun currently 2 different hard-coded hacks to avoid the problem
in just a few places and needs it in a few more places.  One variant
uses volatile for the original lvalue.  This works but is slower than
necessary.  Another temporarily casts the lvalue to volatile.  This
broke with gcc-4.2.1 or earlier (gcc now stores to the lvalue but
doesn't load from it).

END