fixed fuzzing crash (cppcheck-opensource#6005)

firewave · web-flow · commit ac48167eae2e · 2024-02-20T08:24:41.000+01:00
diff --git a/lib/symboldatabase.cpp b/lib/symboldatabase.cpp
@@ -5030,7 +5030,7 @@ static const Token* skipPointers(const Token* tok)
 {
     while (Token::Match(tok, "*|&|&&") || (Token::Match(tok, "( [*&]") && Token::Match(tok->link()->next(), "(|["))) {
         tok = tok->next();
-        if (tok->strAt(-1) == "(" && Token::Match(tok, "%type% ::"))
+        if (tok && tok->strAt(-1) == "(" && Token::Match(tok, "%type% ::"))
             tok = tok->tokAt(2);
     }
 
diff --git a/test/cli/fuzz-crash/crash-8a24e81ac1d7627233a227e6cc156dd20d57b058 b/test/cli/fuzz-crash/crash-8a24e81ac1d7627233a227e6cc156dd20d57b058
@@ -0,0 +1,2 @@
+#i~clude <std*c =           nt rerd*c =           nt rern register 
+n**************&******* register 

Original file line number	Diff line number	Diff line change
`@@ -5030,7 +5030,7 @@ static const Token* skipPointers(const Token* tok)`
`5030`	`5030`	`{`
`5031`	`5031`	`while (Token::Match(tok, "\|&\|&&") \|\| (Token::Match(tok, "( [&]") && Token::Match(tok->link()->next(), "(\|["))) {`
`5032`	`5032`	`tok = tok->next();`
`5033`		`- if (tok->strAt(-1) == "(" && Token::Match(tok, "%type% ::"))`
	`5033`	`+ if (tok && tok->strAt(-1) == "(" && Token::Match(tok, "%type% ::"))`
`5034`	`5034`	`tok = tok->tokAt(2);`
`5035`	`5035`	`}`
`5036`	`5036`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+#i~clude <stdc = nt rerdc = nt rern register`
	`2`	`+n************&***** register`