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* [gcc r13-3041] libstdc++: Re-enable std::hash<std::bitset> in freestanding [PR103626]
@ 2022-10-03 14:46 Jonathan Wakely
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From: Jonathan Wakely @ 2022-10-03 14:46 UTC (permalink / raw)
  To: gcc-cvs, libstdc++-cvs

https://gcc.gnu.org/g:54fd7d81709c5f50537128d3978b4c642b68a711

commit r13-3041-g54fd7d81709c5f50537128d3978b4c642b68a711
Author: Arsen Arsenović <arsen@aarsen.me>
Date:   Wed Sep 28 21:30:11 2022 +0200

    libstdc++: Re-enable std::hash<std::bitset> in freestanding [PR103626]
    
    PR libstdc++/103626 - _GLIBCXX_HOSTED should respect -ffreestanding
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/103626
            * include/std/bitset [!_GLIBCXX_HOSTED]: Re-enable std::hash.
            * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Require ET
            hosted.
            * testsuite/20_util/bitset/ext/constexpr.cc: Likewise.

Diff:
---
 libstdc++-v3/include/std/bitset                               | 9 +++++----
 libstdc++-v3/testsuite/20_util/bitset/cons/constexpr_c++23.cc | 2 ++
 libstdc++-v3/testsuite/20_util/bitset/ext/constexpr.cc        | 2 ++
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/libstdc++-v3/include/std/bitset b/libstdc++-v3/include/std/bitset
index 1038cc65138..10fb05a1b90 100644
--- a/libstdc++-v3/include/std/bitset
+++ b/libstdc++-v3/include/std/bitset
@@ -52,9 +52,10 @@
 # include <string>
 # include <iosfwd>
 # include <bits/cxxabi_forced.h>
-# if __cplusplus >= 201103L
-#  include <bits/functional_hash.h>
-# endif
+#endif
+
+#if __cplusplus >= 201103L
+# include <bits/functional_hash.h>
 #endif
 
 #define _GLIBCXX_BITSET_BITS_PER_WORD  (__CHAR_BIT__ * __SIZEOF_LONG__)
@@ -1664,7 +1665,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
 #undef _GLIBCXX_BITSET_BITS_PER_WORD
 #undef _GLIBCXX_BITSET_BITS_PER_ULL
 
-#if __cplusplus >= 201103L && _GLIBCXX_HOSTED
+#if __cplusplus >= 201103L
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
diff --git a/libstdc++-v3/testsuite/20_util/bitset/cons/constexpr_c++23.cc b/libstdc++-v3/testsuite/20_util/bitset/cons/constexpr_c++23.cc
index 532fc9dc4d5..d308c2b2f10 100644
--- a/libstdc++-v3/testsuite/20_util/bitset/cons/constexpr_c++23.cc
+++ b/libstdc++-v3/testsuite/20_util/bitset/cons/constexpr_c++23.cc
@@ -1,5 +1,7 @@
 // { dg-options "-std=gnu++23" }
 // { dg-do compile { target c++23 } }
+// This test relies on std::string.
+// { dg-require-effective-target hosted }
 
 #include <bitset>
 
diff --git a/libstdc++-v3/testsuite/20_util/bitset/ext/constexpr.cc b/libstdc++-v3/testsuite/20_util/bitset/ext/constexpr.cc
index f82e7aa409a..4bacefad14a 100644
--- a/libstdc++-v3/testsuite/20_util/bitset/ext/constexpr.cc
+++ b/libstdc++-v3/testsuite/20_util/bitset/ext/constexpr.cc
@@ -1,5 +1,7 @@
 // { dg-options "-std=gnu++23" }
 // { dg-do compile { target c++23 } }
+// This test relies on std::string.
+// { dg-require-effective-target hosted }
 
 #include <bitset>
 #include <testsuite_hooks.h>

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