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add error for assigning null to non-nullable pointer

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closes #133
This commit is contained in:
Andrew Kelley 2016-04-09 17:35:26 -07:00
parent 707131e37b
commit e66ed0f2e2
2 changed files with 10 additions and 3 deletions
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9
src/analyze.cpp
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@ -3391,12 +3391,15 @@ static TypeTableEntry *analyze_null_literal_expr(CodeGen *g, ImportTableEntry *i
assert(node->type == NodeTypeNullLiteral);
if (!expected_type) {
add_node_error(g, node,
buf_sprintf("unable to determine null type"));
add_node_error(g, node, buf_sprintf("unable to determine null type"));
return g->builtin_types.entry_invalid;
}
assert(expected_type->id == TypeTableEntryIdMaybe);
if (expected_type->id != TypeTableEntryIdMaybe) {
add_node_error(g, node,
buf_sprintf("expected maybe type, got '%s'", buf_ptr(&expected_type->name)));
return g->builtin_types.entry_invalid;
}
node->data.null_literal.resolved_struct_val_expr.type_entry = expected_type;
node->data.null_literal.resolved_struct_val_expr.source_node = node;

4
test/run_tests.cpp
View File

@ -1810,6 +1810,10 @@ fn derp(){}
)SOURCE", 2,
".tmp_source.zig:3:12: error: no label in scope named 'label'",
".tmp_source.zig:5:1: error: label 'label' defined but not used");
add_compile_fail_case("assign null to non-nullable pointer", R"SOURCE(
const a: &u8 = null;
)SOURCE", 1, ".tmp_source.zig:2:16: error: expected maybe type, got '&u8'");
}
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