http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50647
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-10-07 21:49:58 UTC --- In general the declarations in system.h are expected to be used only for very archaic hosts that do not have prototypes in their system headers. For such hosts, int is probably the right argument type; this prototype should never be used for modern hosts. As such, the prototype should probably remain unchanged; no host that actually has intptr_t should ever see it. The problem would be that the declaration was not detected; we need more details of the host (including whether you were e.g. building natively or building a Canadian cross). AC_USE_SYSTEM_EXTENSIONS should already ensure all appropriate feature test macros are defined for known hosts.
