Continuing to work through regex, and updated libcxx_by_chapter.pdf with weekly test results

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@106790 91177308-0d34-0410-b5e6-96231b3b80d8

test/re/re.badexp/regex_error.pass.cpp

@@ -26,66 +26,71 @@ int main()
     {
         std::regex_error e(std::regex_constants::error_collate);
         assert(e.code() == std::regex_constants::error_collate);
-        assert(e.what() == std::string("error_collate"));
+        assert(e.what() == std::string("The expression contained an invalid collating element name."));
     }
     {
         std::regex_error e(std::regex_constants::error_ctype);
         assert(e.code() == std::regex_constants::error_ctype);
-        assert(e.what() == std::string("error_ctype"));
+        assert(e.what() == std::string("The expression contained an invalid character class name."));
     }
     {
         std::regex_error e(std::regex_constants::error_escape);
         assert(e.code() == std::regex_constants::error_escape);
-        assert(e.what() == std::string("error_escape"));
+        assert(e.what() == std::string("The expression contained an invalid escaped character, or a "
+               "trailing escape."));
     }
     {
         std::regex_error e(std::regex_constants::error_backref);
         assert(e.code() == std::regex_constants::error_backref);
-        assert(e.what() == std::string("error_backref"));
+        assert(e.what() == std::string("The expression contained an invalid back reference."));
     }
     {
         std::regex_error e(std::regex_constants::error_brack);
         assert(e.code() == std::regex_constants::error_brack);
-        assert(e.what() == std::string("error_brack"));
+        assert(e.what() == std::string("The expression contained mismatched [ and ]."));
     }
     {
         std::regex_error e(std::regex_constants::error_paren);
         assert(e.code() == std::regex_constants::error_paren);
-        assert(e.what() == std::string("error_paren"));
+        assert(e.what() == std::string("The expression contained mismatched ( and )."));
     }
     {
         std::regex_error e(std::regex_constants::error_brace);
         assert(e.code() == std::regex_constants::error_brace);
-        assert(e.what() == std::string("error_brace"));
+        assert(e.what() == std::string("The expression contained mismatched { and }."));
     }
     {
         std::regex_error e(std::regex_constants::error_badbrace);
         assert(e.code() == std::regex_constants::error_badbrace);
-        assert(e.what() == std::string("error_badbrace"));
+        assert(e.what() == std::string("The expression contained an invalid range in a {} expression."));
     }
     {
         std::regex_error e(std::regex_constants::error_range);
         assert(e.code() == std::regex_constants::error_range);
-        assert(e.what() == std::string("error_range"));
+        assert(e.what() == std::string("The expression contained an invalid character range, "
+               "such as [b-a] in most encodings."));
     }
     {
         std::regex_error e(std::regex_constants::error_space);
         assert(e.code() == std::regex_constants::error_space);
-        assert(e.what() == std::string("error_space"));
+        assert(e.what() == std::string("There was insufficient memory to convert the expression into "
+               "a finite state machine."));
     }
     {
         std::regex_error e(std::regex_constants::error_badrepeat);
         assert(e.code() == std::regex_constants::error_badrepeat);
-        assert(e.what() == std::string("error_badrepeat"));
+        assert(e.what() == std::string("One of *?+{ was not preceded by a valid regular expression."));
     }
     {
         std::regex_error e(std::regex_constants::error_complexity);
         assert(e.code() == std::regex_constants::error_complexity);
-        assert(e.what() == std::string("error_complexity"));
+        assert(e.what() == std::string("The complexity of an attempted match against a regular "
+               "expression exceeded a pre-set level."));
     }
     {
         std::regex_error e(std::regex_constants::error_stack);
         assert(e.code() == std::regex_constants::error_stack);
-        assert(e.what() == std::string("error_stack"));
+        assert(e.what() == std::string("There was insufficient memory to determine whether the regular "
+               "expression could match the specified character sequence."));
     }
 }