From 94a0819fe3a0d679c3042a77bfe6a2afc505daea Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:11:28 +0200 Subject: Adding upstream version 1.66.0+dfsg1. Signed-off-by: Daniel Baumann --- compiler/rustc_hir_analysis/src/variance/test.rs | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 compiler/rustc_hir_analysis/src/variance/test.rs (limited to 'compiler/rustc_hir_analysis/src/variance/test.rs') diff --git a/compiler/rustc_hir_analysis/src/variance/test.rs b/compiler/rustc_hir_analysis/src/variance/test.rs new file mode 100644 index 000000000..83ed3e44b --- /dev/null +++ b/compiler/rustc_hir_analysis/src/variance/test.rs @@ -0,0 +1,15 @@ +use rustc_errors::struct_span_err; +use rustc_middle::ty::TyCtxt; +use rustc_span::symbol::sym; + +pub fn test_variance(tcx: TyCtxt<'_>) { + // For unit testing: check for a special "rustc_variance" + // attribute and report an error with various results if found. + for id in tcx.hir().items() { + if tcx.has_attr(id.owner_id.to_def_id(), sym::rustc_variance) { + let variances_of = tcx.variances_of(id.owner_id); + struct_span_err!(tcx.sess, tcx.def_span(id.owner_id), E0208, "{:?}", variances_of) + .emit(); + } + } +} -- cgit v1.2.3