FileSystemManager: When copying, take into account equivalent files.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/buildtool/file_system/file_system_manager.hpp b/src/buildtool/file_system/file_system_manager.hpp
index 528d50ca..146e6dbf 100644
--- a/src/buildtool/file_system/file_system_manager.hpp
+++ b/src/buildtool/file_system/file_system_manager.hpp
@@ -1065,6 +1065,12 @@ class FileSystemManager {
             if (std::filesystem::is_symlink(src)) {
                 return false;
             }
+            // Check that src and dst point to different filesystem entities:
+            if (std::filesystem::weakly_canonical(src) ==
+                std::filesystem::weakly_canonical(dst)) {
+                return true;
+            }
+
             if (not RemoveFile(dst)) {
                 Logger::Log(
                     LogLevel::Error, "cannot remove file {}", dst.string());