From e1cff1d1ef92f6a1c6962e0e4153b7353ccad04c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <daniel.marjamaki@gmail.com>
Date: Wed, 30 Jun 2021 21:40:45 +0200
Subject: [PATCH] Fixed #10334 (AST: hang with c++ initializer and
 emplace_back)

---
 lib/tokenlist.cpp     | 3 +++
 test/testtokenize.cpp | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/lib/tokenlist.cpp b/lib/tokenlist.cpp
index ccac6527a..0d1c77150 100644
--- a/lib/tokenlist.cpp
+++ b/lib/tokenlist.cpp
@@ -1267,7 +1267,10 @@ static void compileAssignTernary(Token *&tok, AST_state& state)
     while (tok) {
         if (tok->isAssignmentOp()) {
             state.assign++;
+            const Token *tok1 = tok->next();
             compileBinOp(tok, state, compileAssignTernary);
+            if (Token::simpleMatch(tok1, "{") && tok == tok1->link() && tok->next())
+                tok = tok->next();
             if (state.assign > 0)
                 state.assign--;
         } else if (tok->str() == "?") {
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index b7c96861e..047143dbd 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -6047,6 +6047,12 @@ private:
         ASSERT_EQUALS("decltypex({", testAst("decltype(x){};"));
         ASSERT_EQUALS("decltypexy+(yx+(", testAst("decltype(x+y)(y+x);"));
         ASSERT_EQUALS("decltypexy+(yx+{", testAst("decltype(x+y){y+x};"));
+
+        // #10334: Do not hang!
+        tokenizeAndStringify("void foo(const std::vector<std::string>& locations = {\"\"}) {\n"
+                             "    for (int i = 0; i <= 123; ++i)\n"
+                             "        x->emplace_back(y);\n"
+                             "}");
     }
 
     void astbrackets() { // []