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error sets - fix bad value for constant error literal

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This commit is contained in:
Andrew Kelley 2018-02-08 18:13:07 -05:00
parent fee875770c
commit 57edd4dcb3
2 changed files with 16 additions and 1 deletions
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2
src/ir.cpp
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@ -12308,7 +12308,7 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
if (!resolve_inferred_error_set(ira, child_type, field_ptr_instruction->base.source_node)) {
return ira->codegen->builtin_types.entry_invalid;
}
ErrorTableEntry *err_entry = find_err_table_entry(child_type, field_name);
err_entry = find_err_table_entry(child_type, field_name);
if (err_entry == nullptr) {
ir_add_error(ira, &field_ptr_instruction->base,
buf_sprintf("no error named '%s' in '%s'", buf_ptr(field_name), buf_ptr(&child_type->name)));

15
test/cases/error.zig
View File

@ -108,3 +108,18 @@ fn testErrorSetType() void {
error.FileNotFound => unreachable,
}
}
test "explicit error set cast" {
testExplicitErrorSetCast(Set1.A);
comptime testExplicitErrorSetCast(Set1.A);
}
const Set1 = error{A, B};
const Set2 = error{A, C};
fn testExplicitErrorSetCast(set1: Set1) void {
var x = Set2(set1);
var y = Set1(x);
assert(y == error.A);
}