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authorAlex Lam S.L <alexlamsl@gmail.com>2020-05-12 10:58:37 +0100
committerGitHub <noreply@github.com>2020-05-12 17:58:37 +0800
commiteb7fa252703c052f81e2ab491d84ba352648e4c9 (patch)
treed47154755281e45200754f28fe8d711fb79173d3
parentee7647dc676b18355286609e9a4404dbcdcecc90 (diff)
downloadtracifyjs-eb7fa252703c052f81e2ab491d84ba352648e4c9.tar.gz
tracifyjs-eb7fa252703c052f81e2ab491d84ba352648e4c9.zip
fix corner case in `evaluate` (#3888)
fixes #3887
-rw-r--r--lib/compress.js2
-rw-r--r--test/compress/evaluate.js23
2 files changed, 24 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js
index 415f9bdb..e4f75899 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3368,7 +3368,7 @@ merge(Compressor.prototype, {
});
def(AST_UnaryPostfix, function(compressor, ignore_side_effects, cached, depth) {
var e = this.expression;
- if (!(e instanceof AST_SymbolRef)) return this;
+ if (!e.fixed) return this;
var refs = e.definition().references;
if (!ignore_side_effects && refs[refs.length - 1] !== e) return this;
var v = e._eval(compressor, ignore_side_effects, cached, depth + 1);
diff --git a/test/compress/evaluate.js b/test/compress/evaluate.js
index 60f059a8..8425abe2 100644
--- a/test/compress/evaluate.js
+++ b/test/compress/evaluate.js
@@ -2395,3 +2395,26 @@ issue_3882: {
"NaN",
]
}
+
+issue_3887: {
+ options = {
+ evaluate: true,
+ reduce_vars: true,
+ unused: true,
+ }
+ input: {
+ (function(b) {
+ try {
+ b-- && console.log("PASS");
+ } catch (a_2) {}
+ })(1);
+ }
+ expect: {
+ (function(b) {
+ try {
+ b-- && console.log("PASS");
+ } catch (a_2) {}
+ })(1);
+ }
+ expect_stdout: "PASS"
+}