[gcc r12-6985] libstdc++: Do not use dirent::d_type unconditionally

[Jonathan Wakely]

https://gcc.gnu.org/g:d98668eb06f532b2dbe0c721fa1b9ed6e643df27

commit r12-6985-gd98668eb06f532b2dbe0c721fa1b9ed6e643df27
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Feb 1 23:58:08 2022 +0000

    libstdc++: Do not use dirent::d_type unconditionally
    
    These new tests should not use the d_type member unless it's actually
    present on the OS.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
            autoconf macro to check whether d_type is present.
            * testsuite/experimental/filesystem/iterators/error_reporting.cc:
            Likewise.

Diff:
---
 libstdc++-v3/testsuite/27_io/filesystem/iterators/error_reporting.cc  | 4 ++++
 .../testsuite/experimental/filesystem/iterators/error_reporting.cc    | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/libstdc++-v3/testsuite/27_io/filesystem/iterators/error_reporting.cc b/libstdc++-v3/testsuite/27_io/filesystem/iterators/error_reporting.cc
index 81ef1069367..1f297a731a3 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/iterators/error_reporting.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/iterators/error_reporting.cc
@@ -36,14 +36,18 @@ extern "C" struct dirent* readdir(DIR*)
   {
   case 1:
     global_dirent.d_ino = 999;
+#if defined _GLIBCXX_HAVE_STRUCT_DIRENT_D_TYPE && defined DT_REG
     global_dirent.d_type = DT_REG;
+#endif
     global_dirent.d_reclen = 0;
     std::char_traits<char>::copy(global_dirent.d_name, "file", 5);
     choice = 0;
     return &global_dirent;
   case 2:
     global_dirent.d_ino = 111;
+#if defined _GLIBCXX_HAVE_STRUCT_DIRENT_D_TYPE && defined DT_DIR
     global_dirent.d_type = DT_DIR;
+#endif
     global_dirent.d_reclen = 60;
     std::char_traits<char>::copy(global_dirent.d_name, "subdir", 7);
     choice = 1;
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/iterators/error_reporting.cc b/libstdc++-v3/testsuite/experimental/filesystem/iterators/error_reporting.cc
index ade62732028..806c511ebef 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/iterators/error_reporting.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/iterators/error_reporting.cc
@@ -37,14 +37,18 @@ extern "C" struct dirent* readdir(DIR*)
   {
   case 1:
     global_dirent.d_ino = 999;
+#if defined _GLIBCXX_HAVE_STRUCT_DIRENT_D_TYPE && defined DT_REG
     global_dirent.d_type = DT_REG;
+#endif
     global_dirent.d_reclen = 0;
     std::char_traits<char>::copy(global_dirent.d_name, "file", 5);
     choice = 0;
     return &global_dirent;
   case 2:
     global_dirent.d_ino = 111;
+#if defined _GLIBCXX_HAVE_STRUCT_DIRENT_D_TYPE && defined DT_DIR
     global_dirent.d_type = DT_DIR;
+#endif
     global_dirent.d_reclen = 60;
     std::char_traits<char>::copy(global_dirent.d_name, "subdir", 7);
     choice = 1;