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authorAlex Lam S.L <alexlamsl@gmail.com>2018-02-18 21:51:27 +0800
committerGitHub <noreply@github.com>2018-02-18 21:51:27 +0800
commit4b5993ff15bc99bcb897611974529cbc92543211 (patch)
tree36ecab907e7522c8bc9b6cc68852a43f60543507
parent2351a672ea4fae04353f0221cec7ffb6c2c3bdc0 (diff)
downloadtracifyjs-4b5993ff15bc99bcb897611974529cbc92543211.tar.gz
tracifyjs-4b5993ff15bc99bcb897611974529cbc92543211.zip
fix crash in `may_throw()` (#2932)
fixes #2931
-rw-r--r--lib/compress.js2
-rw-r--r--test/compress/collapse_vars.js23
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"
+}