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author | Jonathan Wakely <jwakely@redhat.com> | 2022-04-28 13:06:31 +0100 |
---|---|---|
committer | Jonathan Wakely <jwakely@redhat.com> | 2022-04-28 13:33:48 +0100 |
commit | 4e117418fb71f508c479e0144500f4da9cc92520 (patch) | |
tree | cf1ec94b493c3c0c63e162d6840f38efd65ea04a | |
parent | d91cb2059fb8b5a50a2aced199e987ab2cf3b629 (diff) | |
download | gcc-4e117418fb71f508c479e0144500f4da9cc92520.zip gcc-4e117418fb71f508c479e0144500f4da9cc92520.tar.gz gcc-4e117418fb71f508c479e0144500f4da9cc92520.tar.bz2 |
libstdc++: Fix error reporting in filesystem::copy [PR99290]
The recursive calls to filesystem::copy should stop if any of them
reports an error.
libstdc++-v3/ChangeLog:
PR libstdc++/99290
* src/c++17/fs_ops.cc (fs::copy): Pass error_code to
directory_iterator constructor, and check on each iteration.
* src/filesystem/ops.cc (fs::copy): Likewise.
* testsuite/27_io/filesystem/operations/copy.cc: Check for
errors during recursion.
* testsuite/experimental/filesystem/operations/copy.cc:
Likewise.
-rw-r--r-- | libstdc++-v3/src/c++17/fs_ops.cc | 8 | ||||
-rw-r--r-- | libstdc++-v3/src/filesystem/ops.cc | 8 | ||||
-rw-r--r-- | libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc | 29 | ||||
-rw-r--r-- | libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc | 29 |
4 files changed, 70 insertions, 4 deletions
diff --git a/libstdc++-v3/src/c++17/fs_ops.cc b/libstdc++-v3/src/c++17/fs_ops.cc index 4552a73..435368f 100644 --- a/libstdc++-v3/src/c++17/fs_ops.cc +++ b/libstdc++-v3/src/c++17/fs_ops.cc @@ -408,8 +408,12 @@ fs::copy(const path& from, const path& to, copy_options options, // set an unused bit in options to disable further recursion if (!is_set(options, copy_options::recursive)) options |= static_cast<copy_options>(4096); - for (const directory_entry& x : directory_iterator(from)) - copy(x.path(), to/x.path().filename(), options, ec); + for (const directory_entry& x : directory_iterator(from, ec)) + { + copy(x.path(), to/x.path().filename(), options, ec); + if (ec) + return; + } } // _GLIBCXX_RESOLVE_LIB_DEFECTS // 2683. filesystem::copy() says "no effects" diff --git a/libstdc++-v3/src/filesystem/ops.cc b/libstdc++-v3/src/filesystem/ops.cc index e2a2cef..98ddff5 100644 --- a/libstdc++-v3/src/filesystem/ops.cc +++ b/libstdc++-v3/src/filesystem/ops.cc @@ -350,8 +350,12 @@ fs::copy(const path& from, const path& to, copy_options options, // set an unused bit in options to disable further recursion if (!is_set(options, copy_options::recursive)) options |= static_cast<copy_options>(4096); - for (const directory_entry& x : directory_iterator(from)) - copy(x.path(), to/x.path().filename(), options, ec); + for (const directory_entry& x : directory_iterator(from, ec)) + { + copy(x.path(), to/x.path().filename(), options, ec); + if (ec) + return; + } } // _GLIBCXX_RESOLVE_LIB_DEFECTS // 2683. filesystem::copy() says "no effects" diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc index b85628c..b936e04 100644 --- a/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc +++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc @@ -193,6 +193,34 @@ test05() VERIFY( !ec ); // Previous value should be cleared (LWG 2683) } +void +test_pr99290() +{ + auto dir = __gnu_test::nonexistent_path(); + auto source = dir/"source"; + auto dest = dir/"dest"; + create_directories(source/"emptydir"); + create_directories(dest/"emptydir"); + std::ofstream{source/"file"} << 'a'; + std::ofstream{dest/"file"} << 'b'; + // PR libstdc++/99290 + // std::filesystem::copy does not always report errors for recursion + std::error_code ec; + copy(source, dest, ec); + VERIFY( ec == std::errc::file_exists ); + +#if __cpp_exceptions + try { + copy(source, dest); + VERIFY( false ); + } catch (const fs::filesystem_error& e) { + VERIFY( e.code() == std::errc::file_exists ); + } +#endif + + remove_all(dir); +} + int main() { @@ -201,4 +229,5 @@ main() test03(); test04(); test05(); + test_pr99290(); } diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc index 319632a..5cd6b48 100644 --- a/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc +++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc @@ -190,6 +190,34 @@ test05() VERIFY( !ec ); // Previous value should be cleared (LWG 2683) } +void +test_pr99290() +{ + auto dir = __gnu_test::nonexistent_path(); + auto source = dir/"source"; + auto dest = dir/"dest"; + create_directories(source/"emptydir"); + create_directories(dest/"emptydir"); + std::ofstream{source/"file"} << 'a'; + std::ofstream{dest/"file"} << 'b'; + // PR libstdc++/99290 + // std::filesystem::copy does not always report errors for recursion + std::error_code ec; + copy(source, dest, ec); + VERIFY( ec == std::errc::file_exists ); + +#if __cpp_exceptions + try { + copy(source, dest); + VERIFY( false ); + } catch (const fs::filesystem_error& e) { + VERIFY( e.code() == std::errc::file_exists ); + } +#endif + + remove_all(dir); +} + int main() { @@ -198,4 +226,5 @@ main() test03(); test04(); test05(); + test_pr99290(); } |