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generate more runtime errors
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3d1824c658
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2 changed files with 22 additions and 6 deletions
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@ -4868,9 +4868,7 @@ fn reuse_function_symbol<'a>(
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// this symbol is a function, that is used by-name (e.g. as an argument to another
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// function). Register it with the current variable, then create a function pointer
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// to it in the IR.
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let layout = layout_cache
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.from_var(env.arena, arg_var, env.subs)
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.expect("creating layout does not fail");
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let res_layout = layout_cache.from_var(env.arena, arg_var, env.subs);
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// we have three kinds of functions really. Plain functions, closures by capture,
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// and closures by unification. Here we record whether this function captures
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@ -4878,8 +4876,8 @@ fn reuse_function_symbol<'a>(
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let captures = partial_proc.captured_symbols.captures();
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let captured = partial_proc.captured_symbols.clone();
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match layout {
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Layout::Closure(argument_layouts, closure_layout, ret_layout) if captures => {
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match res_layout {
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Ok(Layout::Closure(argument_layouts, closure_layout, ret_layout)) if captures => {
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// this is a closure by capture, meaning it itself captures local variables.
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// we've defined the closure as a (function_ptr, closure_data) pair already
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@ -4957,7 +4955,7 @@ fn reuse_function_symbol<'a>(
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stmt
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}
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_ => {
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Ok(layout) => {
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procs.insert_passed_by_name(
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env,
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arg_var,
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@ -4973,6 +4971,17 @@ fn reuse_function_symbol<'a>(
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env.arena.alloc(result),
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)
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}
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Err(LayoutProblem::Erroneous) => {
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let message = format!("The {:?} symbol has an erroneous type", symbol);
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Stmt::RuntimeError(env.arena.alloc(message))
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}
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Err(LayoutProblem::UnresolvedTypeVar(v)) => {
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let message = format!(
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"The {:?} symbol contains a unresolved type var {:?}",
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symbol, v
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);
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Stmt::RuntimeError(env.arena.alloc(message))
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}
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}
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}
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}
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