The pmr aliases for basic_string and match_results are incompatible with
the gcc4-compatible ABI because the Copy-On-Write basic_string class
doesn't support C++11 allocators.
PR libstdc++/87061
* include/experimental/regex [!_GLIBCXX_USE_CXX11_ABI]
(experimental::pmr::match_results, experimental::pmr::cmatch)
(experimental::pmr::smatch, experimental::pmr::wcmatch)
(experimental::pmr::wsmatch): Do not declare for gcc4-compatible ABI,
because COW strings don't support C++11 allocator model.
* include/experimental/string [!_GLIBCXX_USE_CXX11_ABI]
(experimental::pmr::basic_string, experimental::pmr::string)
(experimental::pmr::u16string, experimental::pmr::u32string)
(experimental::pmr::wstring): Likewise.
* include/std/regex [!_GLIBCXX_USE_CXX11_ABI] (pmr::match_results)
(pmr::cmatch, pmr::smatch, pmr::wcmatch, pmr::wsmatch): Likewise.
* include/std/string [!_GLIBCXX_USE_CXX11_ABI] (pmr::basic_string)
(pmr::string, pmr::u16string, pmr::u32string, pmr::wstring): Likewise.
* testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Require
cxx11-abi.
* testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
Tested x86_64-linux, committed to trunk.
commit 134070cf5f9dba6cb655160c551e617d2378cfb4
Author: Jonathan Wakely <jwak...@redhat.com>
Date: Wed Aug 22 23:39:31 2018 +0100
PR libstdc++/87061 remove pmr type aliases for COW strings
The pmr aliases for basic_string and match_results are incompatible with
the gcc4-compatible ABI because the Copy-On-Write basic_string class
doesn't support C++11 allocators.
PR libstdc++/87061
* include/experimental/regex [!_GLIBCXX_USE_CXX11_ABI]
(experimental::pmr::match_results, experimental::pmr::cmatch)
(experimental::pmr::smatch, experimental::pmr::wcmatch)
(experimental::pmr::wsmatch): Do not declare for gcc4-compatible
ABI,
because COW strings don't support C++11 allocator model.
* include/experimental/string [!_GLIBCXX_USE_CXX11_ABI]
(experimental::pmr::basic_string, experimental::pmr::string)
(experimental::pmr::u16string, experimental::pmr::u32string)
(experimental::pmr::wstring): Likewise.
* include/std/regex [!_GLIBCXX_USE_CXX11_ABI] (pmr::match_results)
(pmr::cmatch, pmr::smatch, pmr::wcmatch, pmr::wsmatch): Likewise.
* include/std/string [!_GLIBCXX_USE_CXX11_ABI] (pmr::basic_string)
(pmr::string, pmr::u16string, pmr::u32string, pmr::wstring):
Likewise.
* testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Require
cxx11-abi.
* testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
diff --git a/libstdc++-v3/include/experimental/regex
b/libstdc++-v3/include/experimental/regex
index eb2af151245..633b396b312 100644
--- a/libstdc++-v3/include/experimental/regex
+++ b/libstdc++-v3/include/experimental/regex
@@ -44,6 +44,7 @@ namespace experimental
{
inline namespace fundamentals_v2
{
+#if _GLIBCXX_USE_CXX11_ABI
namespace pmr
{
template<typename _BidirectionalIterator>
@@ -57,7 +58,7 @@ namespace pmr
typedef match_results<wstring::const_iterator> wsmatch;
} // namespace pmr
-
+#endif
} // namespace fundamentals_v2
} // namespace experimental
_GLIBCXX_END_NAMESPACE_VERSION
diff --git a/libstdc++-v3/include/experimental/string
b/libstdc++-v3/include/experimental/string
index f101255d641..5a96bf78d73 100644
--- a/libstdc++-v3/include/experimental/string
+++ b/libstdc++-v3/include/experimental/string
@@ -62,6 +62,7 @@ inline namespace fundamentals_v2
__cont.end());
}
+#if _GLIBCXX_USE_CXX11_ABI
namespace pmr
{
// basic_string using polymorphic allocator in namespace pmr
@@ -77,6 +78,7 @@ inline namespace fundamentals_v2
typedef basic_string<wchar_t> wstring;
} // namespace pmr
+#endif
} // namespace fundamentals_v2
} // namespace experimental
diff --git a/libstdc++-v3/include/std/regex b/libstdc++-v3/include/std/regex
index f0dfa3f68ab..fd155658353 100644
--- a/libstdc++-v3/include/std/regex
+++ b/libstdc++-v3/include/std/regex
@@ -62,7 +62,7 @@
#include <bits/regex.h>
#include <bits/regex_executor.h>
-#if __cplusplus >= 201703L
+#if __cplusplus >= 201703L && _GLIBCXX_USE_CXX11_ABI
#include <memory_resource>
namespace std _GLIBCXX_VISIBILITY(default)
{
diff --git a/libstdc++-v3/include/std/string b/libstdc++-v3/include/std/string
index d3cc03aa179..dd60df2ba6e 100644
--- a/libstdc++-v3/include/std/string
+++ b/libstdc++-v3/include/std/string
@@ -52,7 +52,7 @@
#include <bits/basic_string.h>
#include <bits/basic_string.tcc>
-#if __cplusplus >= 201703L
+#if __cplusplus >= 201703L && _GLIBCXX_USE_CXX11_ABI
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
diff --git
a/libstdc++-v3/testsuite/21_strings/basic_string/types/pmr_typedefs.cc
b/libstdc++-v3/testsuite/21_strings/basic_string/types/pmr_typedefs.cc
index d20fc42901e..23956673792 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/types/pmr_typedefs.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/types/pmr_typedefs.cc
@@ -17,6 +17,7 @@
// { dg-options "-std=gnu++17" }
// { dg-do compile { target c++17 } }
+// { dg-require-effective-target cxx11-abi }
#include <string>
#include <memory_resource>
diff --git a/libstdc++-v3/testsuite/28_regex/match_results/pmr_typedefs.cc
b/libstdc++-v3/testsuite/28_regex/match_results/pmr_typedefs.cc
index 23aef39caf3..d97fcfeb75e 100644
--- a/libstdc++-v3/testsuite/28_regex/match_results/pmr_typedefs.cc
+++ b/libstdc++-v3/testsuite/28_regex/match_results/pmr_typedefs.cc
@@ -17,6 +17,7 @@
// { dg-options "-std=gnu++17" }
// { dg-do compile { target c++17 } }
+// { dg-require-effective-target cxx11-abi }
#include <regex>
#include <memory_resource>
