[gcc/devel/ranger] Revert "Use const for template argument."

[gcc/devel/ranger] Revert "Use const for template argument."

[Aldy Hernandez]

https://gcc.gnu.org/g:6208287fcaf01d3f300442c14a2c13815fbb3191

commit 6208287fcaf01d3f300442c14a2c13815fbb3191
Author: Martin Liska <mliska@suse.cz>
Date:   Wed May 6 12:07:12 2020 +0200

    Revert "Use const for template argument."
    
    This reverts commit 03f9754665b889e0988d0392db1eb35e91b97693.

Diff:
---
 libstdc++-v3/ChangeLog                         | 8 ++++++++
 libstdc++-v3/include/parallel/multiway_merge.h | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 0e5af3d6dc4..25a8f08e089 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,11 @@
+2020-05-06  Martin Liska  <mliska@suse.cz>
+
+	Revert:
+	2020-05-05  Martin Liska  <mliska@suse.cz>
+	PR c/92472
+	* include/parallel/multiway_merge.h:
+	Use const for _Compare template argument.
+
 2020-05-06  Jonathan Wakely  <jwakely@redhat.com>
 
 	* doc/xml/manual/abi.xml (abi.versioning.history): Document library
diff --git a/libstdc++-v3/include/parallel/multiway_merge.h b/libstdc++-v3/include/parallel/multiway_merge.h
index 97a9ce0feb7..983c7b2bd9a 100644
--- a/libstdc++-v3/include/parallel/multiway_merge.h
+++ b/libstdc++-v3/include/parallel/multiway_merge.h
@@ -118,7 +118,7 @@ namespace __gnu_parallel
        *  @return @c true if less. */
       friend bool
       operator<(_GuardedIterator<_RAIter, _Compare>& __bi1,
-		_GuardedIterator<_RAIter, const _Compare>& __bi2)
+		_GuardedIterator<_RAIter, _Compare>& __bi2)
       {
 	if (__bi1._M_current == __bi1._M_end)       // __bi1 is sup
 	  return __bi2._M_current == __bi2._M_end;  // __bi2 is not sup
@@ -188,7 +188,7 @@ namespace __gnu_parallel
        *  @return @c true if less. */
       friend bool
       operator<(_UnguardedIterator<_RAIter, _Compare>& __bi1,
-		_UnguardedIterator<_RAIter, const _Compare>& __bi2)
+		_UnguardedIterator<_RAIter, _Compare>& __bi2)
       {
 	// Normal compare.
 	return (__bi1.__comp)(*__bi1, *__bi2);