From 2c3d0c9b42a221b398ff6086f22c5cfe71aec26b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Franz=20P=C3=B6schel?= <franz.poeschel@gmail.com>
Date: Mon, 20 Mar 2023 12:26:10 +0100
Subject: [PATCH] Hide/deactivate/warn Toml backend on nvcc compilers

https://github.com/ToruNiina/toml11/issues/205
---
 src/IO/JSON/JSONIOHandler.cpp | 12 +++++++++++-
 src/config.cpp                | 23 ++++++++++++++++-------
 test/SerialIOTest.cpp         |  3 +++
 3 files changed, 30 insertions(+), 8 deletions(-)

diff --git a/src/IO/JSON/JSONIOHandler.cpp b/src/IO/JSON/JSONIOHandler.cpp
index 7eb8a57278..54e1db829b 100644
--- a/src/IO/JSON/JSONIOHandler.cpp
+++ b/src/IO/JSON/JSONIOHandler.cpp
@@ -33,7 +33,17 @@ JSONIOHandler::JSONIOHandler(
     std::string originalExtension)
     : AbstractIOHandler{path, at}
     , m_impl{this, std::move(jsonCfg), format, std::move(originalExtension)}
-{}
+{
+// https://github.com/ToruNiina/toml11/issues/205
+#if !defined(__NVCC__) || !__NVCC__
+    if (format == JSONIOHandlerImpl::FileFormat::Toml)
+    {
+        std::cerr << "[Warning] Toml backend is broken on NVCC compilers (see "
+                     "https://github.com/ToruNiina/toml11/issues/205)."
+                  << std::endl;
+    }
+#endif
+}
 
 std::future<void> JSONIOHandler::flush(internal::ParsedFlushParams &)
 {
diff --git a/src/config.cpp b/src/config.cpp
index af5ee17073..83c90f8da7 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -31,20 +31,29 @@
 // @todo add TOML here
 std::map<std::string, bool> openPMD::getVariants()
 {
-    return std::map<std::string, bool>{
-        {"mpi", bool(openPMD_HAVE_MPI)},
-        {"json", true},
-        {"toml", true},
-        {"hdf5", bool(openPMD_HAVE_HDF5)},
-        {"adios1", bool(openPMD_HAVE_ADIOS1)},
-        {"adios2", bool(openPMD_HAVE_ADIOS2)}};
+    return std::map<std::string, bool>
+    {
+        {"mpi", bool(openPMD_HAVE_MPI)}, {"json", true},
+// https://github.com/ToruNiina/toml11/issues/205
+#if !defined(__NVCC__) || !__NVCC__
+            {"toml", true},
+#endif
+            {"hdf5", bool(openPMD_HAVE_HDF5)},
+            {"adios1", bool(openPMD_HAVE_ADIOS1)},
+        {
+            "adios2", bool(openPMD_HAVE_ADIOS2)
+        }
+    };
 }
 
 std::vector<std::string> openPMD::getFileExtensions()
 {
     std::vector<std::string> fext;
     fext.emplace_back("json");
+// https://github.com/ToruNiina/toml11/issues/205
+#if !defined(__NVCC__) || !__NVCC__
     fext.emplace_back("toml");
+#endif
 #if openPMD_HAVE_ADIOS1 || openPMD_HAVE_ADIOS2
     fext.emplace_back("bp");
 #endif
diff --git a/test/SerialIOTest.cpp b/test/SerialIOTest.cpp
index 5745fd2dc1..5eda0b2545 100644
--- a/test/SerialIOTest.cpp
+++ b/test/SerialIOTest.cpp
@@ -1628,8 +1628,11 @@ TEST_CASE("dtype_test", "[serial]")
             dtype_test(t);
         }
     }
+// https://github.com/ToruNiina/toml11/issues/205
+#if !defined(__NVCC__) || !__NVCC__
     dtype_test("toml");
     dtype_test("toml", R"(toml.mode = "template")");
+#endif
 }
 
 inline void write_test(const std::string &backend)