Merge pull request #865 from xtensor-stack/feature/support-no-except

Make xsimd compatible with -fno-exceptions

.github/workflows/cxx-no-exceptions.yml

@@ -0,0 +1,17 @@
+name: C++ -fno-except compatibility
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install dependencies
+      run: |
+          sudo apt install g++ cmake
+    - name: Setup
+      run: |
+        mkdir _build
+        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS=-fno-exceptions
+    - name: Build
+      run: cmake --build _build
+

include/xsimd/memory/xsimd_aligned_allocator.hpp

@@ -171,8 +171,10 @@ namespace xsimd
     aligned_allocator<T, A>::allocate(size_type n, const void*) -> pointer
     {
         pointer res = reinterpret_cast<pointer>(aligned_malloc(sizeof(T) * n, A));
+#if defined(_CPPUNWIND) || defined(__cpp_exceptions)
         if (res == nullptr)
             throw std::bad_alloc();
+#endif
         return res;
     }