diff --git a/lib/library.cpp b/lib/library.cpp
index 1561f9c3ff9..15ba68c31c6 100644
--- a/lib/library.cpp
+++ b/lib/library.cpp
@@ -1076,7 +1076,7 @@ bool Library::isuninitargbad(const Token *ftok, int argnr, int indirect, bool *h
 const Library::AllocFunc* Library::getAllocFuncInfo(const Token *tok) const
 {
     while (Token::simpleMatch(tok, "::"))
-        tok = tok->astOperand2();
+        tok = tok->astOperand2() ? tok->astOperand2() : tok->astOperand1();
     const std::string funcname = getFunctionName(tok);
     return isNotLibraryFunction(tok) && functions.find(funcname) != functions.end() ? nullptr : getAllocDealloc(mAlloc, funcname);
 }
@@ -1085,7 +1085,7 @@ const Library::AllocFunc* Library::getAllocFuncInfo(const Token *tok) const
 const Library::AllocFunc* Library::getDeallocFuncInfo(const Token *tok) const
 {
     while (Token::simpleMatch(tok, "::"))
-        tok = tok->astOperand2();
+        tok = tok->astOperand2() ? tok->astOperand2() : tok->astOperand1();
     const std::string funcname = getFunctionName(tok);
     return isNotLibraryFunction(tok) && functions.find(funcname) != functions.end() ? nullptr : getAllocDealloc(mDealloc, funcname);
 }
@@ -1094,7 +1094,7 @@ const Library::AllocFunc* Library::getDeallocFuncInfo(const Token *tok) const
 const Library::AllocFunc* Library::getReallocFuncInfo(const Token *tok) const
 {
     while (Token::simpleMatch(tok, "::"))
-        tok = tok->astOperand2();
+        tok = tok->astOperand2() ? tok->astOperand2() : tok->astOperand1();
     const std::string funcname = getFunctionName(tok);
     return isNotLibraryFunction(tok) && functions.find(funcname) != functions.end() ? nullptr : getAllocDealloc(mRealloc, funcname);
 }