[PATCH] Fix missing returns in libstdc++ header and tests

[Jonathan Wakely]

Some missing returns found by ubsan.

        * include/bits/locale_conv.h (wbuffer_convert::_M_put): Add missing
        return statement.
        * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
        Return void.
        * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
        Likewise.
        * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc: Add
        missing return statements.
        * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
        Likewise.
        * testsuite/27_io/basic_istream/extractors_arithmetic/char/12.cc:
        Return void.
        * testsuite/special_functions/14_expint/pr68397.cc: Likewise.

Tested powerpc64le-linux, committed to trunk.


commit 9e3a856a6ac1d10c4fdb92d99a6db2e9e9f13a44
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Thu Jun 15 18:11:03 2017 +0100

    Fix missing returns in libstdc++ header and tests
    
        * include/bits/locale_conv.h (wbuffer_convert::_M_put): Add missing
        return statement.
        * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
        Return void.
        * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
        Likewise.
        * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc: Add
        missing return statements.
        * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
        Likewise.
        * testsuite/27_io/basic_istream/extractors_arithmetic/char/12.cc:
        Return void.
        * testsuite/special_functions/14_expint/pr68397.cc: Likewise.

diff --git a/libstdc++-v3/include/bits/locale_conv.h 
b/libstdc++-v3/include/bits/locale_conv.h
index 9b952d4..74beaec 100644
--- a/libstdc++-v3/include/bits/locale_conv.h
+++ b/libstdc++-v3/include/bits/locale_conv.h
@@ -482,6 +482,7 @@ _GLIBCXX_END_NAMESPACE_CXX11
       {
        if (_M_buf->sputn(__p, __n) < __n)
          return false;
+       return true;
       }
 
       // convert the put area and write to the byte stream buffer
diff --git 
a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/1.cc 
b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/1.cc
index 88a74f6..c2d1951 100644
--- 
a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/1.cc
+++ 
b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/1.cc
@@ -22,7 +22,7 @@
 #include <string_view>
 #include <testsuite_hooks.h>
 
-bool
+void
 test01()
 {
   typedef std::string_view::size_type csize_type;
diff --git 
a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc
 
b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc
index 0e625d6..957c80c 100644
--- 
a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc
+++ 
b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc
@@ -22,7 +22,7 @@
 #include <string_view>
 #include <testsuite_hooks.h>
 
-bool
+void
 test01()
 {
   typedef std::wstring_view::size_type csize_type;
diff --git 
a/libstdc++-v3/testsuite/23_containers/map/modifiers/insert_or_assign/1.cc 
b/libstdc++-v3/testsuite/23_containers/map/modifiers/insert_or_assign/1.cc
index 48c17eb..aaf5d8a 100644
--- a/libstdc++-v3/testsuite/23_containers/map/modifiers/insert_or_assign/1.cc
+++ b/libstdc++-v3/testsuite/23_containers/map/modifiers/insert_or_assign/1.cc
@@ -39,10 +39,12 @@ struct Val
   {
     val = other.val;
     other.moved_from_assign = true;
+    return *this;
   }
   Val& operator=(const Val& other)
   {
     val = other.val;
+    return *this;
   }
 };
 
diff --git 
a/libstdc++-v3/testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc
 
b/libstdc++-v3/testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc
index 67fd164..d4b9601 100644
--- 
a/libstdc++-v3/testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc
+++ 
b/libstdc++-v3/testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc
@@ -38,10 +38,12 @@ struct Val
   {
     val = other.val;
     other.moved_from_assign = true;
+    return *this;
   }
   Val& operator=(const Val& other)
   {
     val = other.val;
+    return *this;
   }
 };
 
diff --git 
a/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/12.cc 
b/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/12.cc
index 24cd2f5..7e3b773 100644
--- 
a/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/12.cc
+++ 
b/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/12.cc
@@ -50,7 +50,7 @@ void test12_aux(bool integer_type)
   VERIFY(is.fail());
 }
 
-bool test12()
+void test12()
 {
   test12_aux<short>(true);
   test12_aux<int>(true);
diff --git a/libstdc++-v3/testsuite/special_functions/14_expint/pr68397.cc 
b/libstdc++-v3/testsuite/special_functions/14_expint/pr68397.cc
index 8da16d1..9527f40 100644
--- a/libstdc++-v3/testsuite/special_functions/14_expint/pr68397.cc
+++ b/libstdc++-v3/testsuite/special_functions/14_expint/pr68397.cc
@@ -23,7 +23,7 @@
 #include <cmath>
 #include <testsuite_hooks.h>
 
-int
+void
 test01()
 {
   // Answers from Wolfram Alpha.