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.
fmtlib · Oct 22, 2019 · 41b648c · 41b648c
1 parent 6498bc6
commit 41b648c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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