Re: [PATCH] Handle nested Ada functions with gnat-llvm

[Tom Tromey <tromey@adacore.com>]

>>>>> "Tom" == Tom Tromey <tromey@adacore.com> writes:

Tom> In Ada, a nested function can refer to variables in lexically
Tom> enclosing outer scopes.  Ordinarily this is implemented in DWARF using
Tom> DW_AT_static_link, so that the correct outer function invocation can
Tom> be found from the nested function.

Tom> However, LLVM does not implement the DWARF DW_AT_static_link feature,
Tom> so this approach isn't possible.

Tom> gnat-llvm, though, implements "unnesting" manually, passing an
Tom> activation record parameter to nested functions.  This activation
Tom> record can be used to find the correct outer frame.

Tom> This patch adds a new language method to enable this.  A new test case
Tom> is included; this test will fail if the static link or some similar
Tom> feature is not implemented (i.e., a naive unwind looking for the next
Tom> instance of the outer function will fail).

Ping.

Tom