[roll] Roll fuchsia [fbl] Fix FakeCallable to compile with C++20
If you try to compile the tree with -std=c++20, one of the first hurdles
you run into is fbl refusing to compile wherever fbl::Function is used
because it is only used for sizeof and doesn't have a call operator.
However, after consulting some C++ experts, it sounds like instantiating
the call operator is perfectly legal for the compiler to ask for based
on how things are now, and it's just that C++20 mode happens to be a bit
stricter (i.e. according to the standard this was always wrong).
Compiler errors are never fun, so let's nip this in the bud since it's
used so many places. Unfortunately it can't be constexpr because of some
stuff in zxtest, but since it's just a declaration you should get a link
error if anyone actually tries to use it.
TEST: no behavior change
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/459940
Original-Revision: 70f6c1a20d3f7369ee3e7eeeabe6dd5addda2fd6
GitOrigin-RevId: 28327a8994172c4b1034c9f4708f17204c5c56fc
Change-Id: Ic233ce2db1846e4a9b902c8e65c0b96492c16cc7
diff --git a/stem b/stem
index 334395d..0759c9b 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
githooks=""
remote="https://fuchsia.googlesource.com/fuchsia"
gerrithost="https://fuchsia-review.googlesource.com"
- revision="5fddce7827db3a1e823072d87b3780fdb57cc996"/>
+ revision="70f6c1a20d3f7369ee3e7eeeabe6dd5addda2fd6"/>
</projects>
<hooks>
<hook name="install-fx"
