diff options
| -rw-r--r-- | lib/compress.js | 7 | ||||
| -rw-r--r-- | test/compress/issue-1750.js | 28 |
2 files changed, 31 insertions, 4 deletions
diff --git a/lib/compress.js b/lib/compress.js index 763490a7..79e7d4d2 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -2557,7 +2557,7 @@ merge(Compressor.prototype, { if (!default_branch) { default_branch = branch; } else { - eliminate_branch(branch); + eliminate_branch(branch, body[body.length - 1]); } } else if (value !== self.expression) { var exp = branch.expression.evaluate(compressor); @@ -2570,7 +2570,7 @@ merge(Compressor.prototype, { default_branch = null; } } else if (exp !== branch.expression) { - eliminate_branch(branch); + eliminate_branch(branch, body[body.length - 1]); continue; } } @@ -2583,7 +2583,7 @@ merge(Compressor.prototype, { } body.push(branch); } - while (i < len) eliminate_branch(self.body[i++]); + while (i < len) eliminate_branch(self.body[i++], body[body.length - 1]); if (body.length > 0) { body[0].body = decl.concat(body[0].body); } @@ -2626,7 +2626,6 @@ merge(Compressor.prototype, { return self; function eliminate_branch(branch, prev) { - if (!prev) prev = body[body.length - 1]; if (prev && !aborts(prev)) { prev.body = prev.body.concat(branch.body); } else { diff --git a/test/compress/issue-1750.js b/test/compress/issue-1750.js index c1448afe..d18bc49f 100644 --- a/test/compress/issue-1750.js +++ b/test/compress/issue-1750.js @@ -24,3 +24,31 @@ case_1: { } expect_stdout: "0 2" } + +case_2: { + options = { + dead_code: true, + evaluate: true, + switches: true, + } + input: { + var a = 0, b = 1; + switch (0) { + default: + b = 2; + case a: + a = 3; + case 0: + } + console.log(a, b); + } + expect: { + var a = 0, b = 1; + switch (0) { + case a: + a = 3; + } + console.log(a, b); + } + expect_stdout: "3 1" +} |