Fixed msys2 builds

.github/workflows/c-cpp.yml

@@ -343,7 +343,13 @@ jobs:
       uses: eine/setup-msys2@v2
       with:
         update: true
-        install: mingw-w64-x86_64-toolchain mingw-w64-x86_64-clang mingw-w64-x86_64-lld mingw-w64-x86_64-cmake make
+        install: mingw-w64-x86_64-toolchain mingw-w64-x86_64-clang mingw-w64-x86_64-lld mingw-w64-x86_64-cmake make git
+
+    - name: Apply patch
+      if: matrix.config.c == 'clang'
+      run: |
+        cd /
+        git apply --verbose --ignore-whitespace --directory=mingw64/include/c++/`ls mingw64/include/c++`/ /d/a/p2pool/p2pool/patches/msys2/typeinfo.patch
 
     - name: Build libcurl
       run: |

patches/msys2/typeinfo.patch

@@ -0,0 +1,14 @@
+diff --git a/typeinfo b/typeinfo
+index 4cce6cb..323fbc1 100644
+--- a/typeinfo
++++ b/typeinfo
+@@ -189,6 +189,9 @@ namespace std
+ #endif
+ 
+ #if __GXX_TYPEINFO_EQUALITY_INLINE || __cplusplus > 202002L
++#ifdef __clang__
++  __attribute__((always_inline))
++#endif
+   _GLIBCXX23_CONSTEXPR inline bool
+   type_info::operator==(const type_info& __arg) const _GLIBCXX_NOEXCEPT
+   {