PR#6239: a "raise" in -g mode can end up calling a C function (stash_backtrace). Therefore the containing function must not be a leaf function, so that on x86-32/MacOSX and x86-64, the stack is properly 16-realigned on entrance to containing function.
(Cherry-picked r14316 from trunk.)


git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.01@14320 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
PR#6243: Make "ocamlopt -g" more resistant to ill-formed locations


git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.01@14321 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02