lib/std/debug.zig                                                   |  4 ++++
 lib/std/debug/no_panic.zig                                          |  5 +++++
 lib/std/debug/simple_panic.zig                                      | 31 +++++++++++++++++++++++++++++++
 src/Sema.zig                                                        | 10 ++++++----
 src/Zcu.zig                                                         |  2 ++
 test/cases/compile_errors/bad_panic_call_signature.zig              |  1 +
 test/cases/compile_errors/bad_panic_generic_signature.zig           |  1 +
 test/cases/safety/@errorCast error not present in destination.zig   |  2 +-
 test/cases/safety/@errorCast error union casted to disjoint set.zig |  2 +-
 test/incremental/change_panic_handler_explicit                      |  3 +++
 10 files changed, 55 insertions(+), 6 deletions(-)