Split ignoreException to avoid suppressing CTRL-C

This splits `ignoreException` into `ignoreExceptionExceptInterrupt`
(which ignores all exceptions except `Interrupt`, which indicates a
SIGINT/CTRL-C) and `ignoreExceptionInDestructor` (which ignores all
exceptions, so that destructors do not throw exceptions).

This prevents many cases where Nix ignores CTRL-C entirely.
See: https://github.com/NixOS/nix/issues/7245

Upstream-PR: https://github.com/NixOS/nix/pull/11618
Change-Id: Ie7d2467eedbe840d1b9fa2e88a4e88e4ab26a87b

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstore/optimise-store.cc b/src/libstore/optimise-store.cc
index c60e5a85d..14381b6e0 100644
--- a/src/libstore/optimise-store.cc
+++ b/src/libstore/optimise-store.cc
@@ -31,7 +31,7 @@ struct MakeReadOnly
             /* This will make the path read-only. */
             if (path != "") canonicaliseTimestampAndPermissions(path);
         } catch (...) {
-            ignoreException();
+            ignoreExceptionInDestructor();
         }
     }
 };