Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/constexpr-cast.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 84e7813d76e9 |
children |
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// Test to verify that evaluating reinterpret_cast is diagnosed in // constant expressions. // { dg-do compile { target c++11 } } int i; // The following was accepted due to bug 49171. constexpr void *q = reinterpret_cast<void*>(&i); // { dg-error "not a constant expression" } constexpr void *r0 = reinterpret_cast<void*>(1); // { dg-error "not a constant expression|'reinterpret_cast' from integer to pointer" } constexpr void *r1 = reinterpret_cast<void*>(sizeof 'x'); // { dg-error "'reinterpret_cast<void\\*>\\(1\[ul\]\*\\)' is not a constant expression" } template <class T> constexpr bool f () { #if __cplusplus > 201103L T *p = reinterpret_cast<T*>(sizeof (T)); // { dg-error "not a constant expression" "" { target c++14 } } return p; #else return *reinterpret_cast<T*>(sizeof (T)); // { dg-error "not a constant expression" "" { target c++11_only } } #endif } constexpr bool b = f<int>(); // { dg-message "in .constexpr. expansion of " }