規格上に、文字列リテラルを、non-constなchar *に代入しているサンプルコードがある。
8.5.1 Aggregates [dcl.init.aggr] p7
struct S { int a; char* b; int c; }; S ss = { 1, "asdf" };
8.5.1 Aggregates [dcl.init.aggr] p15
エラーとなっているが、unionへの代入に対するエラーで、文字列リテラルのconst性は意図していない。
union u { int a; char* b; }; u a = { 1 }; u b = a; u c = 1; // error u d = { 0, "asdf" }; // error u e = { "asdf" }; // error
9.3.1 Nonstatic member functions [class.mfct.non-static] p3
struct tnode { //... void set(char*, tnode* l, tnode* r); }; //... void f(tnode n1, tnode n2) { n1.set("abc",&n2,0); n2.set("def",0,0); }
9.5 Unions [class.union] p2
void f() { union { int a; char* p; }; a = 1; p = "Jennifer"; }
13.2 Declaration matching [over.dcl] p1
//... struct D : B { int f(char*); }; //... void h(D* pd) { //... pd->f("Ben"); // OK, calls D::f }
13.2 Declaration matching [over.dcl] p2
void f(char*); void g() { extern void f(int); f("asdf"); // error: f(int) hides f(char*) // so there is no f(char*) in this scope }
13.3.1.2 Operators in expressions [over.match.oper] p1
struct String { String (const String&); String (char*); operator char* (); }; String operator + (const String&, const String&); void f(void) { char* p= "one" + "two"; // ill-formed because neither //... }
14.4.2 Template non-type arguments [temp.arg.nontype] p2
これは微妙かもしれない。そもそもエラーを示す目的なのだから。
template<class T, char* p> class X { X(); X(const char* q) { / ... / } }; X<int, "Studebaker"> x1; // error: string literal as template-argument char p[] = "Vivisectionist";
14.8.1 Implicit instantiation [temp.inst] p10
namespace N { template<class T> class List { public: T* get(); }; } template<class K, class V> class Map { public: N::List<V> lt; V get(K); }; void g(Map<char*,int>& m) { int
14.9.1 Explicit template argument specification [temp.arg.explicit] p5
template<class X, class Y, class Z> X f(Y,Z); template<class ... Args> void f2(); void g() { f<int,char*,double>("aa",3.0); f<int,char*>("aa",3.0); // Z is deduced to be double f<int>("aa",3.0); // Y is deduced to be const char*, and // Z is deduced to be double f("aa",3.0); // error: X cannot be deduced f2<char, short, int, long>(); // OK }
ついでに、こんな間違いもあった。報告しておかないと。
5 Expressions [expr] p6
rvalue referenceをlvalueで初期化している。
struct A { }; A&& operator+(A, A); A&& f(); A a; A&& ar = a;
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