From 00669427df4b2677c644e386a97903e44df6a69c Mon Sep 17 00:00:00 2001
From: kent-tri <42222765+kent-tri@users.noreply.github.com>
Date: Mon, 21 Oct 2019 17:17:22 +0900
Subject: [PATCH] Patch compiler error when building using nvcc

If you compile using `nvcc` and pass the option `--expt-relaxed-constexpr` it will crash with an internal compiler error. This modification prevents using `constexpr` in `fmtlib` when compiling using `nvcc` and prevents the crash.
---
 include/fmt/core.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/fmt/core.h b/include/fmt/core.h
index 993ca468..e84c02b3 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -58,10 +58,12 @@
 // Check if relaxed C++14 constexpr is supported.
 // GCC doesn't allow throw in constexpr until version 6 (bug 67371).
 #ifndef FMT_USE_CONSTEXPR
+#if !defined(__NVCC__)
 #  define FMT_USE_CONSTEXPR                                           \
     (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \
      (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L))
 #endif
+#endif
 #if FMT_USE_CONSTEXPR
 #  define FMT_CONSTEXPR constexpr
 #  define FMT_CONSTEXPR_DECL constexpr