diff options
| -rw-r--r-- | lib/compress.js | 4 | ||||
| -rw-r--r-- | test/compress/numbers.js | 32 |
2 files changed, 35 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js index f5d60ffc..c596de3e 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -6529,7 +6529,9 @@ merge(Compressor.prototype, { && self.right.is_number(compressor) && (self.operator != "+" || self.right.left.is_boolean(compressor) - || self.right.left.is_number(compressor))) { + || self.right.left.is_number(compressor)) + && (self.right.left.is_constant_expression() + || !self.right.right.has_side_effects(compressor))) { self = make_node(AST_Binary, self, { operator: align(self.operator, self.right.operator), left: make_node(AST_Binary, self.left, { diff --git a/test/compress/numbers.js b/test/compress/numbers.js index f49996a4..c40ca09d 100644 --- a/test/compress/numbers.js +++ b/test/compress/numbers.js @@ -1135,3 +1135,35 @@ issue_3655: { "0", ] } + +issue_3676_1: { + options = { + evaluate: true, + unsafe_math: true, + } + input: { + var a = []; + console.log(false - (a - (a[1] = 42))); + } + expect: { + var a = []; + console.log(false - (a - (a[1] = 42))); + } + expect_stdout: "NaN" +} + +issue_3676_2: { + options = { + evaluate: true, + unsafe_math: true, + } + input: { + var a; + console.log(false - ((a = []) - (a[1] = 42))); + } + expect: { + var a; + console.log(false - ((a = []) - (a[1] = 42))); + } + expect_stdout: "NaN" +} |