[Bug translator/31119] did not escape Golang program symbol name

["lijunlong at openresty dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31119

--- Comment #2 from lijunlong <lijunlong at openresty dot com> ---
Comment on attachment 15242
  --> https://sourceware.org/bugzilla/attachment.cgi?id=15242
did not escape golang symbol

commit d10ae580f8791606739ae6bfa7db7277d6921cc9
Author: lijunlong <lijunlong@openresty.com>
Date:   Thu Dec 7 10:49:37 2023 +0800

    bugfix: escape char should cast to 'unsigned char' instead of 'unsigned'.

diff --git a/util.cxx b/util.cxx
index f2eaf54f4..7a1081654 100644
--- a/util.cxx
+++ b/util.cxx
@@ -1301,10 +1301,9 @@ octal_character (unsigned c)
   return '0' + c % 8;
 }

-string
-escaped_character (unsigned c)
+static inline void
+escaped_character_impl (unsigned c, ostringstream &o)
 {
-  ostringstream o;
   int oc = (int)c;

   switch (oc)
@@ -1362,18 +1361,28 @@ escaped_character (unsigned c)
             << octal_character(oc);
         }
     }
+}
+
+string
+escaped_character (unsigned c)
+{
+  ostringstream o;
+
+  escaped_character_impl(c, o);
+
   return o.str();
 }

 string
 escaped_literal_string (const string& str)
 {
-  string op;
+  ostringstream o;
+
   for (unsigned i = 0; i < str.size (); i++)
     {
-      op += escaped_character((unsigned)str[i]);
+      escaped_character_impl((unsigned char)str[i], o);
     }
-  return op;
+  return o.str();
 }

 string

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