re: Guile 1.8 and 86_64 gcc 4

[Bill Schottstaedt]

Actually the only cases that need the check are SCM_CELL_OBJECT_1 and
SCM_SET_CELL_OBJECT_0.  But perhaps there's some way to embed that
asm business (in gc.h) into the SCM_VALIDATE_CELL macro.
I haven't used "asm" before, but here's a suggestion that seems to work:

  #define SCM_VALIDATE_CELL(cell, expr) ({ __asm__ __volatile__ ("" : : "g" 
(cell)); expr; })