src/AstGen.zig                                                                | 42 ++++++++++++++++++++------------
 test/cases/compile_errors/error_set_cannot_capture_by_reference.zig           | 15 ++++++++++++
 test/cases/compile_errors/switch_on_error_union_discard.zig                   |  4 +--
 test/cases/compile_errors/switch_on_error_with_capture_by_reference.zig       | 24 ++++++++++++++++++
 test/cases/compile_errors/switch_on_error_with_non_trivial_switch_operand.zig | 22 +++++++++++++++++
 5 files changed, 88 insertions(+), 19 deletions(-)