Fix #13471 FP: unreachableCode (return statement in lambda expression) (danmar#7165)

Author: chrchr-github

lib/tokenlist.cpp

@@ -1750,7 +1750,8 @@ static Token * createAstAtToken(Token *tok)
         (cpp && Token::Match(tok, "%name% {") && iscpp11init(tok->next())) ||
         Token::Match(tok->previous(), "[;{}] %cop%|++|--|( !!{") ||
         Token::Match(tok->previous(), "[;{}] %num%|%str%|%char%") ||
-        Token::Match(tok->previous(), "[;{}] delete new")) {
+        Token::Match(tok->previous(), "[;{}] delete new") ||
+        (cpp && Token::Match(tok->previous(), "[;{}] ["))) {
         if (cpp && (Token::Match(tok->tokAt(-2), "[;{}] new|delete %name%") || Token::Match(tok->tokAt(-3), "[;{}] :: new|delete %name%")))
             tok = tok->previous();
 

test/testtokenize.cpp

@@ -6475,7 +6475,7 @@ class TestTokenizer : public TestFixture {
         // (cast){data}[index]
         ASSERT_EQUALS("a&{(0[1[5[0=", testAst("(int (**)[i]){&a}[0][1][5] = 0;"));
         ASSERT_EQUALS("ab12,{(0[,(", testAst("a(b, (int []){1,2}[0]);"));
-        ASSERT_EQUALS("n0=", testAst("TrivialDefCtor{[2][2]}[1][1].n = 0;"));
+        ASSERT_EQUALS("TrivialDefCtora2[2[{1[1[n.0=", testAst("TrivialDefCtor{a[2][2]}[1][1].n = 0;"));
         ASSERT_EQUALS("aT12,3,{1[=", testAst("a = T{1, 2, 3}[1];"));
 
         // Type{data}()
@@ -6877,7 +6877,7 @@ class TestTokenizer : public TestFixture {
 
         // #9662
         ASSERT_EQUALS("b{[{ stdunique_ptr::0nullptrnullptr:?{", testAst("auto b{[] { std::unique_ptr<void *>{0 ? nullptr : nullptr}; }};"));
-        ASSERT_EQUALS("b{[=", testAst("void a() { [b = [] { ; }] {}; }"));
+        ASSERT_EQUALS("{b{[=[", testAst("void a() { [b = [] { ; }] {}; }"));
 
         // Lambda capture expression (C++14)
         ASSERT_EQUALS("a{b1=[= c2=", testAst("a = [b=1]{c=2;};"));
@@ -6964,6 +6964,8 @@ class TestTokenizer : public TestFixture {
         ASSERT_EQUALS("gT{(&[{= 0return", testAst("auto g = T{ [&]() noexcept -> int { return 0; } };"));
 
         ASSERT_EQUALS("sf.{(i[{={", testAst("void g(int i) { S s{ .f = { [i]() {} } }; }"));
+
+        ASSERT_EQUALS("{([", testAst("void f() { []() {}; }")); // #13471
     }
 
     void astcase() {