[CUDA][HIP] Add a __device__ version of std::__glibcxx_assert_fail()

libstdc++ 15 uses the non-constexpr function
std::__glibcxx_assert_fail() to trigger compilation errors when the
__glibcxx_assert(cond) macro is used in a constantly evaluated context.

Compilation fails when using code from the libstdc++ (such as
std::array) on device code, since these assertions invoke a
non-constexpr host function from device code.

This patch proposes a cuda wrapper header "bits/c++config.h" which adds a
__device__ version of std::__glibcxx_assert_fail().

Author: jmmartinez

clang/lib/Headers/CMakeLists.txt

@@ -341,6 +341,7 @@ set(cuda_wrapper_files
 )
 
 set(cuda_wrapper_bits_files
+  cuda_wrappers/bits/c++config.h
   cuda_wrappers/bits/shared_ptr_base.h
   cuda_wrappers/bits/basic_string.h
   cuda_wrappers/bits/basic_string.tcc

clang/lib/Headers/cuda_wrappers/bits/c++config.h

@@ -0,0 +1,51 @@
+// libstdc++ uses the non-constexpr function std::__glibcxx_assert_fail()
+// to trigger compilation errors when the __glibcxx_assert(cond) macro
+// is used in a constexpr context.
+// Compilation fails when using code from the libstdc++ (such as std::array) on
+// device code, since these assertions invoke a non-constexpr host function from
+// device code.
+//
+// To work around this issue, we declare our own device version of the function
+
+#ifndef __CLANG_CUDA_WRAPPERS_BITS_CPP_CONFIG
+#define __CLANG_CUDA_WRAPPERS_BITS_CPP_CONFIG
+
+#include_next <bits/c++config.h>
+
+#ifdef _LIBCPP_BEGIN_NAMESPACE_STD
+_LIBCPP_BEGIN_NAMESPACE_STD
+#else
+namespace std {
+#ifdef _GLIBCXX_BEGIN_NAMESPACE_VERSION
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+#endif
+
+#ifdef _GLIBCXX_VERBOSE_ASSERT
+__attribute__((device, noreturn)) inline void
+__glibcxx_assert_fail(const char *file, int line, const char *function,
+                      const char *condition) noexcept {
+  if (file && function && condition)
+    __builtin_printf("%s:%d: %s: Assertion '%s' failed.\n", file, line,
+                     function, condition);
+  else if (function)
+    __builtin_printf("%s: Undefined behavior detected.\n", function);
+  __builtin_abort();
+}
+#endif
+
+#endif
+__attribute__((device, noreturn, __always_inline__,
+               __visibility__("default"))) inline void
+__glibcxx_assert_fail(...) noexcept {
+  __builtin_abort();
+}
+#ifdef _LIBCPP_END_NAMESPACE_STD
+_LIBCPP_END_NAMESPACE_STD
+#else
+#ifdef _GLIBCXX_BEGIN_NAMESPACE_VERSION
+_GLIBCXX_END_NAMESPACE_VERSION
+#endif
+} // namespace std
+#endif
+
+#endif