diff options
Diffstat (limited to 'gcc/rust/ast/rust-ast.cc')
| -rw-r--r-- | gcc/rust/ast/rust-ast.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/rust/ast/rust-ast.cc b/gcc/rust/ast/rust-ast.cc index 2eac09b..14ad3a0 100644 --- a/gcc/rust/ast/rust-ast.cc +++ b/gcc/rust/ast/rust-ast.cc @@ -4228,8 +4228,10 @@ BlockExpr::normalize_tail_expr () if (!expr) { // HACK: try to turn the last statement into a tail expression - if (statements.size () && statements.back ()->is_expr ()) + if (!statements.empty () && statements.back ()->is_expr ()) { + // Watch out: This reference become invalid when the vector is + // modified. auto &stmt = static_cast<ExprStmt &> (*statements.back ()); if (!stmt.is_semicolon_followed ()) |