Full support for alignment of aggregate states #2808

dbms/src/Common/AlignedBuffer.cpp

@@ -16,9 +16,10 @@ namespace ErrorCodes
 void AlignedBuffer::alloc(size_t size, size_t alignment)
 {
     void * new_buf;
-    int res = ::posix_memalign(&new_buf, alignment, size);
+    int res = ::posix_memalign(&new_buf, std::max(alignment, sizeof(void*)), size);
     if (0 != res)
-        throwFromErrno("Cannot allocate memory (posix_memalign) " + formatReadableSizeWithBinarySuffix(size) + ".",
+        throwFromErrno("Cannot allocate memory (posix_memalign), size: "
+            + formatReadableSizeWithBinarySuffix(size) + ", alignment: " + formatReadableSizeWithBinarySuffix(alignment) + ".",
             ErrorCodes::CANNOT_ALLOCATE_MEMORY, res);
     buf = new_buf;
 }