http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60660
Bug ID: 60660
Summary: alloca function for inlines that allocates on caller
stack
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: josh at joshtriplett dot org
To implement certain helper functions, it would help greatly to have the
ability to perform stack allocations in the parent function from an inline
function. If the function is guaranteed to be inline (for instance, with
always_inline), this seems straightforward. A function like
__builtin_alloca_caller() would make it possible to write something like
alloca_sprintf safely, without multiple evaluation of the variable arguments as
a macro would.
