[committed] libstdc++: Fix some warnings in filesystem tests

[Jonathan Wakely]

There's a -Wunused-but-set-variable warning in operations/all.cc which
can be fixed with [[maybe_unused]].

The statements in operations/copy.cc give -Wunused-value warnings. I
think I meant to use |= rather than !=.

And operations/file_size.cc gets -Wsign-compare warnings.

	* testsuite/27_io/filesystem/operations/all.cc: Mark unused variable.
	* testsuite/27_io/filesystem/operations/copy.cc: Fix typo.
	* testsuite/experimental/filesystem/operations/copy.cc: Likewise.
	* testsuite/27_io/filesystem/operations/file_size.cc: Use correct type
	for return value, and in comparison.
	* testsuite/experimental/filesystem/operations/file_size.cc: Likewise.

Tested powerpc64le-linux, committed to master.


-------------- next part --------------
commit 9412b35affa46a18f7e657fb449b449ac9a4a599
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Mar 5 17:21:24 2020 +0000

    libstdc++: Fix some warnings in filesystem tests
    
    There's a -Wunused-but-set-variable warning in operations/all.cc which
    can be fixed with [[maybe_unused]].
    
    The statements in operations/copy.cc give -Wunused-value warnings. I
    think I meant to use |= rather than !=.
    
    And operations/file_size.cc gets -Wsign-compare warnings.
    
            * testsuite/27_io/filesystem/operations/all.cc: Mark unused variable.
            * testsuite/27_io/filesystem/operations/copy.cc: Fix typo.
            * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
            * testsuite/27_io/filesystem/operations/file_size.cc: Use correct type
            for return value, and in comparison.
            * testsuite/experimental/filesystem/operations/file_size.cc: Likewise.

diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/all.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/all.cc
index a53c777e522..982f8626cad 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/all.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/all.cc
@@ -39,7 +39,7 @@ main()
   const std::filesystem::perm_options permopts{};
   std::filesystem::space_info sp;
   std::error_code ec;
-  bool b;
+  bool b [[maybe_unused]];
   std::uintmax_t size;
 
   std::filesystem::absolute(p);
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc
index 69fa693fcb3..f7aac8a302f 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/copy.cc
@@ -57,7 +57,7 @@ test01()
   VERIFY( !exists(to) );
 
   ec.clear();
-  opts != fs::copy_options::recursive;
+  opts |= fs::copy_options::recursive;
   fs::copy("/", to, opts, ec);
   VERIFY( ec == std::make_error_code(std::errc::is_a_directory) );
   VERIFY( !exists(to) );
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/file_size.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/file_size.cc
index 4aa0ba1ec43..fecd4fb2696 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/file_size.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/file_size.cc
@@ -29,9 +29,9 @@ void
 test01()
 {
   std::error_code ec;
-  size_t size = fs::file_size(".", ec);
+  auto size = fs::file_size(".", ec);
   VERIFY( ec == std::errc::is_a_directory );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 
   try {
     size = fs::file_size(".");
@@ -40,7 +40,7 @@ test01()
     ec = e.code();
   }
   VERIFY( ec == std::errc::is_a_directory );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 }
 
 void
@@ -49,9 +49,9 @@ test02()
   fs::path p = __gnu_test::nonexistent_path();
 
   std::error_code ec;
-  size_t size = fs::file_size(p, ec);
+  auto size = fs::file_size(p, ec);
   VERIFY( ec );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 
   try {
     size = fs::file_size(p);
@@ -60,7 +60,7 @@ test02()
     ec = e.code();
   }
   VERIFY( ec );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 }
 
 int
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc
index e1bda0ffb6f..e1e6d1dcc15 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/copy.cc
@@ -57,7 +57,7 @@ test01()
   VERIFY( !exists(to) );
 
   ec.clear();
-  opts != fs::copy_options::recursive;
+  opts |= fs::copy_options::recursive;
   fs::copy("/", to, opts, ec);
   VERIFY( ec == std::make_error_code(std::errc::is_a_directory) );
   VERIFY( !exists(to) );
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/file_size.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/file_size.cc
index f609da7f395..ea4df63f55b 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/file_size.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/file_size.cc
@@ -29,9 +29,9 @@ void
 test01()
 {
   std::error_code ec;
-  size_t size = fs::file_size(".", ec);
+  auto size = fs::file_size(".", ec);
   VERIFY( ec == std::errc::is_a_directory );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 
   try {
     size = fs::file_size(".");
@@ -40,7 +40,7 @@ test01()
     ec = e.code();
   }
   VERIFY( ec == std::errc::is_a_directory );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 }
 
 void
@@ -49,9 +49,9 @@ test02()
   fs::path p = __gnu_test::nonexistent_path();
 
   std::error_code ec;
-  size_t size = fs::file_size(p, ec);
+  auto size = fs::file_size(p, ec);
   VERIFY( ec );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 
   try {
     size = fs::file_size(p);
@@ -60,7 +60,7 @@ test02()
     ec = e.code();
   }
   VERIFY( ec );
-  VERIFY( size == -1 );
+  VERIFY( size == (std::uintmax_t)-1 );
 }
 
 int