[libcxx-commits] [PATCH] D120453: [libc++] Fix double file closing in `std::filesystem::remove_all()`.

Louis Dionne via Phabricator via libcxx-commits libcxx-commits at lists.llvm.org
Mon Feb 28 09:57:08 PST 2022


This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG3906ebf750b8: [libc++] Fix double file closing in `std::filesystem::remove_all()`. (authored by var-const, committed by ldionne).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120453/new/

https://reviews.llvm.org/D120453

Files:
  libcxx/src/filesystem/operations.cpp


Index: libcxx/src/filesystem/operations.cpp
===================================================================
--- libcxx/src/filesystem/operations.cpp
+++ libcxx/src/filesystem/operations.cpp
@@ -1416,12 +1416,14 @@
   if (fd != -1) {
     // If that worked, iterate over the contents of the directory and
     // remove everything in it, recursively.
-    scope_exit close_fd([=] { ::close(fd); });
     DIR* stream = ::fdopendir(fd);
     if (stream == nullptr) {
+      ::close(fd);
       ec = detail::capture_errno();
       return 0;
     }
+    // Note: `::closedir` will also close the associated file descriptor, so
+    // there should be no call to `close(fd)`.
     scope_exit close_stream([=] { ::closedir(stream); });
 
     uintmax_t count = 0;


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