Commit Graph

2 Commits

Author SHA1 Message Date
Erik Eckstein
42fef1fb68 SILGen: let withoutActuallyEscaping also catch an escaping closure in the throwing case
withoutActuallyEscaping checks that the passed closure has not beed escaped by ensuring that its reference count is exactly 1 at the end of the code block.
So far this was only done in the regular return case. But if the code block throws, the check was not done.

Fixes an undetected undefined behavior.
2025-01-24 18:57:40 +01:00
Arnold Schwaighofer
89e972f5a8 SILGen: Implement withoutActuallyEscaping verification
Check that an ``withoutActuallyEscaping(noescape_closure) { // scope}`` closure
has not escaped in the scope using the ``is_escaping_closure %closure``
instruction.

rdar://35525730
2018-03-07 09:00:12 -08:00