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libstdc++/67173 Fix filesystem::canonical for Solaris 10.

Message ID 20150917153321.GG2969@redhat.com
State New
Headers show

Commit Message

Jonathan Wakely Sept. 17, 2015, 3:33 p.m. UTC 
On 16/09/15 23:50 +0100, Jonathan Wakely wrote:
>On 16/09/15 19:58 +0100, Jonathan Wakely wrote:
>>commit ef25038796485298ff8f040bc79e0d9a371171fa
>>Author: Jonathan Wakely <jwakely@redhat.com>
>>Date:   Wed Sep 16 18:07:32 2015 +0100
>>
>>   Implement filesystem::canonical() without realpath
>>   	PR libstdc++/67173
>>   	* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check _XOPEN_VERSION
>>   	and PATH_MAX for _GLIBCXX_USE_REALPATH.
>>   	* config.h.in: Regenerate.
>>   	* configure: Regenerate.
>>   	* src/filesystem/ops.cc: (canonical) [!_GLIBCXX_USE_REALPATH]: Add
>>   	alternative implementation.
>>   	* testsuite/experimental/filesystem/operations/canonical.cc: New.
>>   	* testsuite/experimental/filesystem/operations/exists.cc: Add more
>>   	tests.
>>   	* testsuite/experimental/filesystem/operations/absolute.cc: Add test
>>   	variables.
>>   	* testsuite/experimental/filesystem/operations/copy.cc: Likewise.
>>   	* testsuite/experimental/filesystem/operations/current_path.cc:
>>   	Likewise.
>>   	* testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
>>   	* testsuite/experimental/filesystem/operations/status.cc: Likewise.
>>   	* testsuite/experimental/filesystem/operations/temp_directory_path.cc:
>>   	Likewise.
>
>Committed to trunk.
>

I'm removing part of the new canonical.cc test as it fails
occasionally with:

terminate called after throwing an instance of 'std::experimental::filesystem::v1::__cxx11::filesystem_error'
  what():  filesystem error: cannot canonicalize: No such file or directory [/dev/stdin]
FAIL: experimental/filesystem/operations/canonical.cc execution test

This is odd, as I check with exists() before calling canonical(), but
rather than try to understand what is happening I'm just going to
remove that part.

Committed to trunk.
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Patch

commit a250423d1964952312bf97e6be3de987308a5164
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Sep 17 16:17:11 2015 +0100

    Remove non-deterministic part of canonical() test
    
    	* testsuite/experimental/filesystem/operations/canonical.cc: Remove
    	non-deterministic part of the test.

diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/canonical.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/canonical.cc
index d752feb..5091a70 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/canonical.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/canonical.cc
@@ -57,17 +57,6 @@  test01()
   p = canonical( p, ec );
   VERIFY( p == "/" );
   VERIFY( !ec );
-
-  p = "/dev/stdin";
-  if (exists(p))
-    {
-      auto p2 = canonical(p);
-      if (is_symlink(p))
-        VERIFY( p != p2 );
-      else
-        VERIFY( p == p2 );
-      VERIFY( canonical(p2) == p2 );
-    }
 }
 
 int