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translate-c: fix translation when no default switch case

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This commit is contained in:
Andrew Kelley 2017-11-26 16:03:56 -05:00
parent aa2ca3f02c
commit 9a8545d590
2 changed files with 39 additions and 1 deletions
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2
src/translate_c.cpp
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@ -2344,7 +2344,7 @@ static AstNode *trans_switch_stmt(Context *c, TransScope *parent_scope, const Sw
if (!switch_scope->found_default && !stmt->isAllEnumCasesCovered()) {
AstNode *prong_node = trans_create_node(c, NodeTypeSwitchProng);
prong_node->data.switch_prong.expr = trans_create_node(c, NodeTypeBreak);
prong_node->data.switch_prong.expr = trans_create_node_goto(c, end_label_name);
switch_scope->switch_node->data.switch_expr.prongs.append(prong_node);
}

38
test/translate_c.zig
View File

@ -1042,6 +1042,44 @@ pub fn addCases(cases: &tests.TranslateCContext) {
\\ return x + 13;
\\}
);
cases.add("switch statement with no default",
\\int foo(int x) {
\\ switch (x) {
\\ case 1:
\\ x += 1;
\\ case 2:
\\ break;
\\ case 3:
\\ case 4:
\\ return x + 1;
\\ }
\\ return x + 13;
\\}
,
\\fn foo(_arg_x: c_int) -> c_int {
\\ var x = _arg_x;
\\ {
\\ switch (x) {
\\ 1 => goto case_0,
\\ 2 => goto case_1,
\\ 3 => goto case_2,
\\ 4 => goto case_3,
\\ else => goto end,
\\ };
\\ case_0:
\\ x += 1;
\\ case_1:
\\ goto end;
\\ case_2:
\\ case_3:
\\ return x + 1;
\\ goto end;
\\ end:
\\ };
\\ return x + 13;
\\}
);
}