--- libreoffice-6.4.2.2-orig/bridges/source/cpp_uno/gcc3_linux_x86-64/share.hxx	2020-03-12 00:18:35.000000000 +0800
+++ libreoffice-6.4.2.2/bridges/source/cpp_uno/gcc3_linux_x86-64/share.hxx	2020-04-11 10:46:57.547292863 +0800
@@ -108,6 +108,16 @@
 struct __cxa_exception {
 #if defined _LIBCPPABI_VERSION // detect libc++abi
 #if defined __LP64__ || LIBCXXABI_ARM_EHABI
+
+    // This is a new field added with LLVM 10
+    // <https://github.com/llvm/llvm-project/commit/f2a436058fcbc11291e73badb44e243f61046183>
+    // "[libcxxabi] Insert padding in __cxa_exception struct for compatibility". 
+
+    // Now _Unwind_Exception is marked with __attribute__((aligned)),
+    // which implies __cxa_exception is also aligned. Insert padding
+    // in the beginning of the struct, rather than before unwindHeader.
+    void *reserve;
+
     std::size_t referenceCount;
 #endif