http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55940
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-01-11
11:23:02 UTC ---
Your assumptions are wrong according to documentation:
@item cdecl
@cindex functions that do pop the argument stack on the 386
@opindex mrtd
On the Intel 386, the @code{cdecl} attribute causes the compiler to
assume that the calling function pops off the stack space used to
pass arguments. This is
useful to override the effects of the @option{-mrtd} switch.
which doesn't say that all arguments will be passed on the stack.
