diff --git a/gcc/rust/expand/rust-cfg-strip.cc b/gcc/rust/expand/rust-cfg-strip.cc index 2e6971e63f3..67baebec158 100644 --- a/gcc/rust/expand/rust-cfg-strip.cc +++ b/gcc/rust/expand/rust-cfg-strip.cc @@ -828,9 +828,13 @@ CfgStrip::visit (AST::ArrayIndexExpr &expr) const auto &array_expr = expr.get_array_expr (); if (array_expr.is_marked_for_strip ()) - rust_error_at (array_expr.get_locus (), - "cannot strip expression in this position - outer " - "attributes not allowed"); + { + rust_error_at (array_expr.get_locus (), + "cannot strip expression in this position - outer " + "attributes not allowed"); + expr.mark_for_strip (); + return; + } const auto &index_expr = expr.get_index_expr (); if (index_expr.is_marked_for_strip ()) @@ -1044,9 +1048,13 @@ CfgStrip::visit (AST::CallExpr &expr) auto &function = expr.get_function_expr (); if (function.is_marked_for_strip ()) - rust_error_at (function.get_locus (), - "cannot strip expression in this position - outer " - "attributes not allowed"); + { + rust_error_at (function.get_locus (), + "cannot strip expression in this position - outer " + "attributes not allowed"); + expr.mark_for_strip (); + return; + } /* spec says outer attributes are specifically allowed for elements * of call expressions, so full stripping possible */ diff --git a/gcc/testsuite/rust/compile/issue-4167.rs b/gcc/testsuite/rust/compile/issue-4167.rs new file mode 100644 index 00000000000..47f4e88ea7c --- /dev/null +++ b/gcc/testsuite/rust/compile/issue-4167.rs @@ -0,0 +1,15 @@ +#![feature(no_core)] +#![no_core] +macro_rules! the_macro { + ( $foo:stmt ; $bar:stmt ; ) => { + #[cfg(foo)] + $foo + + $foo[cfg(bar)] + $bar + }; +} + +fn the_function() { + the_macro!( (); (); ); // { dg-error "cannot strip expression in this position" } +}