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* [gcc r13-4611] libstdc++: Make operator<< for stacktraces less templated (LWG 3515)
@ 2022-12-12 14:00 Jonathan Wakely
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From: Jonathan Wakely @ 2022-12-12 14:00 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:2327d9331430777006008ab3b051afe2b4fc15bd
commit r13-4611-g2327d9331430777006008ab3b051afe2b4fc15bd
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Fri Dec 9 14:59:01 2022 +0000
libstdc++: Make operator<< for stacktraces less templated (LWG 3515)
This change was approved for C++23 last month.
libstdc++-v3/ChangeLog:
* include/std/stacktrace (operator<<): Only output to narrow
ostreams (LWG 3515).
* testsuite/19_diagnostics/stacktrace/synopsis.cc:
Diff:
---
libstdc++-v3/include/std/stacktrace | 38 ++++++++++------------
.../19_diagnostics/stacktrace/synopsis.cc | 11 +++----
2 files changed, 22 insertions(+), 27 deletions(-)
diff --git a/libstdc++-v3/include/std/stacktrace b/libstdc++-v3/include/std/stacktrace
index ec3335e89d8..83c6463b0d8 100644
--- a/libstdc++-v3/include/std/stacktrace
+++ b/libstdc++-v3/include/std/stacktrace
@@ -165,9 +165,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
return __state;
}
- template<typename _CharT, typename _Traits>
- friend basic_ostream<_CharT, _Traits>&
- operator<<(basic_ostream<_CharT, _Traits>&, const stacktrace_entry&);
+ friend ostream&
+ operator<<(ostream&, const stacktrace_entry&);
bool
_M_get_info(string* __desc, string* __file, int* __line) const
@@ -720,25 +719,22 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
noexcept(noexcept(__a.swap(__b)))
{ __a.swap(__b); }
- template<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- operator<<(basic_ostream<_CharT, _Traits>& __os,
- const stacktrace_entry& __f)
- {
- string __desc, __file;
- int __line;
- if (__f._M_get_info(&__desc, &__file, &__line))
- {
- __os.width(4);
- __os << __desc << " at " << __file << ':' << __line;
- }
- return __os;
- }
+ inline ostream&
+ operator<<(ostream& __os, const stacktrace_entry& __f)
+ {
+ string __desc, __file;
+ int __line;
+ if (__f._M_get_info(&__desc, &__file, &__line))
+ {
+ __os.width(4);
+ __os << __desc << " at " << __file << ':' << __line;
+ }
+ return __os;
+ }
- template<typename _CharT, typename _Traits, typename _Allocator>
- inline basic_ostream<_CharT, _Traits>&
- operator<<(basic_ostream<_CharT, _Traits>& __os,
- const basic_stacktrace<_Allocator>& __st)
+ template<typename _Allocator>
+ inline ostream&
+ operator<<(ostream& __os, const basic_stacktrace<_Allocator>& __st)
{
for (stacktrace::size_type __i = 0; __i < __st.size(); ++__i)
{
diff --git a/libstdc++-v3/testsuite/19_diagnostics/stacktrace/synopsis.cc b/libstdc++-v3/testsuite/19_diagnostics/stacktrace/synopsis.cc
index 72582fa53c6..262abea21ec 100644
--- a/libstdc++-v3/testsuite/19_diagnostics/stacktrace/synopsis.cc
+++ b/libstdc++-v3/testsuite/19_diagnostics/stacktrace/synopsis.cc
@@ -28,13 +28,12 @@ namespace std
template<class Allocator>
string to_string(const basic_stacktrace<Allocator>& st);
- template<class charT, class traits>
- basic_ostream<charT, traits>&
- operator<<(basic_ostream<charT, traits>& os, const stacktrace_entry& f);
+ ostream&
+ operator<<(ostream& os, const stacktrace_entry& f);
- template<class charT, class traits, class Allocator>
- basic_ostream<charT, traits>&
- operator<<(basic_ostream<charT, traits>& os, const basic_stacktrace<Allocator>& st);
+ template<class Allocator>
+ ostream&
+ operator<<(ostream& os, const basic_stacktrace<Allocator>& st);
namespace pmr {
using stacktrace = basic_stacktrace<polymorphic_allocator<stacktrace_entry>>;
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