Switch TString and TStringBase to std::reverse_iterator

At the time an attempt to use e. g. `std::find_if` with `TString::rbegin()` / `TString::rend()` does not compile against `-DUSE_STL_SYSTEM` / modern libstdc++.

1 files changed, 7 insertions, 1 deletions

diff --git a/util/generic/string_ut.h b/util/generic/string_ut.h
index 44bb10bdebe..3a91f61dd18 100644
--- a/util/generic/string_ut.h
+++ b/util/generic/string_ut.h
@@ -906,7 +906,7 @@ public:
         s2.assign(Data._0123456(), 2, 2);
         UNIT_ASSERT(s2 == Data._23());
 
-        //s2.reserve();
+        // s2.reserve();
 
         TStringType s5(Data.abcde());
         s5.clear();
@@ -1152,5 +1152,11 @@ public:
 
         *ritBegin = (ui8)'e';
         UNIT_ASSERT_VALUES_EQUAL(*ritBegin, (ui8)'e');
+
+        str = chars;
+        auto it = std::find_if(
+            str.rbegin(), str.rend(),
+            [](char_type c) { return c == 'o'; });
+        UNIT_ASSERT_EQUAL(it, str.rbegin());
     }
 };