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author | Alex Lam S.L <alexlamsl@gmail.com> | 2018-02-18 21:51:27 +0800 |
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committer | GitHub <noreply@github.com> | 2018-02-18 21:51:27 +0800 |
commit | 4b5993ff15bc99bcb897611974529cbc92543211 (patch) | |
tree | 36ecab907e7522c8bc9b6cc68852a43f60543507 | |
parent | 2351a672ea4fae04353f0221cec7ffb6c2c3bdc0 (diff) | |
download | tracifyjs-4b5993ff15bc99bcb897611974529cbc92543211.tar.gz tracifyjs-4b5993ff15bc99bcb897611974529cbc92543211.zip |
fix crash in `may_throw()` (#2932)
fixes #2931
-rw-r--r-- | lib/compress.js | 2 | ||||
-rw-r--r-- | test/compress/collapse_vars.js | 23 |
2 files changed, 24 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js index 2cc8282a..f3770cce 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -2864,7 +2864,7 @@ merge(Compressor.prototype, { return this.value.may_throw(compressor); }); def(AST_Return, function(compressor){ - return this.value.may_throw(compressor); + return this.value && this.value.may_throw(compressor); }); def(AST_Sequence, function(compressor){ return any(this.expressions, compressor); diff --git a/test/compress/collapse_vars.js b/test/compress/collapse_vars.js index d0a5df85..688f54c4 100644 --- a/test/compress/collapse_vars.js +++ b/test/compress/collapse_vars.js @@ -4642,3 +4642,26 @@ issue_805: { } } } + +issue_2931: { + options = { + collapse_vars: true, + unused: true, + } + input: { + console.log(function() { + var a = function() { + return; + }(); + return a; + }()); + } + expect: { + console.log(function() { + return function() { + return; + }(); + }()); + } + expect_stdout: "undefined" +} |