attr-format.cpp
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// RUN: %clang_cc1 -fsyntax-only -Wformat-nonliteral -verify %s
struct S {
static void f(const char*, ...) __attribute__((format(printf, 1, 2)));
static const char* f2(const char*) __attribute__((format_arg(1)));
// GCC has a hidden 'this' argument in member functions which is why
// the format argument is argument 2 here.
void g(const char*, ...) __attribute__((format(printf, 2, 3)));
const char* g2(const char*) __attribute__((format_arg(2)));
void h(const char*, ...) __attribute__((format(printf, 1, 4))); // \
expected-error{{implicit this argument as the format string}}
void h2(const char*, ...) __attribute__((format(printf, 2, 1))); // \
expected-error{{out of bounds}}
const char* h3(const char*) __attribute__((format_arg(1))); // \
expected-error{{invalid for the implicit this argument}}
void operator() (const char*, ...) __attribute__((format(printf, 2, 3)));
};
// PR5521
struct A { void a(const char*,...) __attribute((format(printf,2,3))); };
void b(A x) {
x.a("%d", 3);
}
// PR8625: correctly interpret static member calls as not having an implicit
// 'this' argument.
namespace PR8625 {
struct S {
static void f(const char*, const char*, ...)
__attribute__((format(printf, 2, 3)));
};
void test(S s, const char* str) {
s.f(str, "%s", str);
}
}
// Make sure we interpret member operator calls as having an implicit
// this argument.
void test_operator_call(S s, const char* str) {
s("%s", str);
}