+// RUN: %clang_cc1 -fsyntax-only %s -verify -pedantic -std=c99
+// RUN: %clang_cc1 -fsyntax-only %s -verify -pedantic -std=c11
+// RUN: %clang_cc1 -fsyntax-only %s -verify -pedantic -std=c17
// RUN: %clang_cc1 -fsyntax-only %s -verify -pedantic
+#if __STDC_VERSION__ >= 201112L
// expected-no-diagnostics
+#endif
// Math stuff
short t = __builtin_constant_p(5353) ? 42 : somefunc();
+// The calls to _Static_assert and _Generic produce warnings if the compiler default standard is < c11
+#if __STDC_VERSION__ < 201112L
+// expected-warning@+9 {{'_Static_assert' is a C11 extension}}
+// expected-warning@+9 {{'_Static_assert' is a C11 extension}}
+// expected-warning@+9 {{'_Static_assert' is a C11 extension}}
+// expected-warning@+9 {{'_Static_assert' is a C11 extension}} expected-warning@+9 {{'_Generic' is a C11 extension}}
+// expected-warning@+9 {{'_Static_assert' is a C11 extension}} expected-warning@+9 {{'_Generic' is a C11 extension}}
+// expected-warning@+9 {{'_Static_assert' is a C11 extension}} expected-warning@+9 {{'_Generic' is a C11 extension}}
+#endif
+
// PR44684
_Static_assert((__builtin_clz)(1u) >= 15, "");
_Static_assert((__builtin_popcount)(1u) == 1, "");
_Static_assert(_Generic(1u,unsigned:__builtin_popcount)(1u) == 1, "");
_Static_assert(_Generic(1u,unsigned:__builtin_ctz)(2u) == 1, "");
+#if __STDC_VERSION__ < 201112L
+// expected-warning@+3 {{'_Static_assert' is a C11 extension}}
+#endif
__SIZE_TYPE__ strlen(const char*);
_Static_assert((__builtin_constant_p(1) ? (***&strlen)("foo") : 0) == 3, "");