From c7587c016efa04d2497be475e00e41660203bd52 Mon Sep 17 00:00:00 2001
From: Daniel Tschinder <daniel@tschinder.de>
Date: Mon, 1 Apr 2019 19:41:50 -0700
Subject: [PATCH] Don't accept '\08' or '\09' in strict mode (#9769)

---
 packages/babel-parser/src/tokenizer/index.js | 10 ++++++++--
 scripts/tests/test262/test262_whitelist.txt  |  3 ---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/packages/babel-parser/src/tokenizer/index.js b/packages/babel-parser/src/tokenizer/index.js
index 1dfa400899..9171d50710 100644
--- a/packages/babel-parser/src/tokenizer/index.js
+++ b/packages/babel-parser/src/tokenizer/index.js
@@ -1213,7 +1213,13 @@ export default class Tokenizer extends LocationParser {
             octalStr = octalStr.slice(0, -1);
             octal = parseInt(octalStr, 8);
           }
-          if (octal > 0) {
+          this.state.pos += octalStr.length - 1;
+          const next = this.input.charCodeAt(this.state.pos);
+          if (
+            octalStr !== "0" ||
+            next === charCodes.digit8 ||
+            next === charCodes.digit9
+          ) {
             if (inTemplate) {
               this.state.invalidTemplateEscapePosition = codePos;
               return null;
@@ -1226,7 +1232,7 @@ export default class Tokenizer extends LocationParser {
               this.state.octalPosition = codePos;
             }
           }
-          this.state.pos += octalStr.length - 1;
+
           return String.fromCharCode(octal);
         }
 
diff --git a/scripts/tests/test262/test262_whitelist.txt b/scripts/tests/test262/test262_whitelist.txt
index a90c625054..3094e3d313 100644
--- a/scripts/tests/test262/test262_whitelist.txt
+++ b/scripts/tests/test262/test262_whitelist.txt
@@ -409,8 +409,6 @@ language/expressions/object/method-definition/private-name-early-error-gen-insid
 language/expressions/object/method-definition/private-name-early-error-gen-inside-class.js(strict mode)
 language/expressions/object/method-definition/private-name-early-error-method-inside-class.js(default)
 language/expressions/object/method-definition/private-name-early-error-method-inside-class.js(strict mode)
-language/expressions/template-literal/invalid-legacy-octal-escape-sequence.js(default)
-language/expressions/template-literal/invalid-legacy-octal-escape-sequence.js(strict mode)
 language/expressions/template-literal/unicode-escape-nls-err.js(default)
 language/expressions/template-literal/unicode-escape-nls-err.js(strict mode)
 language/identifiers/unicode-escape-nls-err.js(default)
@@ -586,7 +584,6 @@ language/literals/regexp/u-unicode-esc-non-hex.js(default)
 language/literals/regexp/u-unicode-esc-non-hex.js(strict mode)
 language/literals/regexp/unicode-escape-nls-err.js(default)
 language/literals/regexp/unicode-escape-nls-err.js(strict mode)
-language/literals/string/legacy-non-octal-escape-sequence-strict.js(strict mode)
 language/literals/string/unicode-escape-nls-err-double.js(default)
 language/literals/string/unicode-escape-nls-err-double.js(strict mode)
 language/literals/string/unicode-escape-nls-err-single.js(default)