gcc支持中文变量名的补丁

gcc47-chs.patch

--- gcc-4.7.0-20120604/libcpp/lex.c	2011-12-20 20:56:54.000000000 +0800
+++ gcc-4.7.0-20120604/libcpp/lex.umod.c	2012-07-05 21:53:30.184527392 +0800
@@ -1322,7 +1322,10 @@
 	  raw_prefix_len++;
 	  continue;
 	}
-      break;
+	if (raw_prefix[raw_prefix_len] > 0x80)
+	  raw_prefix_len++;
+	else
+        break;
     }
 
   if (raw_prefix[raw_prefix_len] != '(')
@@ -2090,6 +2093,7 @@
 	}
       /* Fall through.  */
 
+    cpp_name:
     case '_':
     case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
     case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
@@ -2342,7 +2346,12 @@
       }
 
     default:
-      create_literal (pfile, result, buffer->cur - 1, 1, CPP_OTHER);
+      if (c >= 0x80)
+       {
+        goto cpp_name;
+       }
+      else
+        create_literal (pfile, result, buffer->cur - 1, 1, CPP_OTHER);
       break;
     }
 
@@ -2451,13 +2460,7 @@
 	  const unsigned char * name = NODE_NAME (token->val.node.node);
 	  
 	  for (i = 0; i < NODE_LEN (token->val.node.node); i++)
-	    if (name[i] & ~0x7F)
-	      {
-		i += utf8_to_ucn (buffer, name + i) - 1;
-		buffer += 10;
-	      }
-	    else
-	      *buffer++ = NODE_NAME (token->val.node.node)[i];
+	    *buffer++ = NODE_NAME (token->val.node.node)[i];
 	}
       break;
 
@@ -2537,14 +2540,7 @@
 	const unsigned char * name = NODE_NAME (token->val.node.node);
 	
 	for (i = 0; i < NODE_LEN (token->val.node.node); i++)
-	  if (name[i] & ~0x7F)
-	    {
-	      unsigned char buffer[10];
-	      i += utf8_to_ucn (buffer, name + i) - 1;
-	      fwrite (buffer, 1, 10, fp);
-	    }
-	  else
-	    fputc (NODE_NAME (token->val.node.node)[i], fp);
+	  fputc (NODE_NAME (token->val.node.node)[i], fp);
       }
       break;
 
--- gcc-4.6.1-20111002/libiberty/safe-ctype.c	2011-03-15 22:32:36.000000000 +0800
+++ gcc-4.6.1-20111002/libiberty/safe-ctype.umod.c	2011-10-23 20:39:30.885345790 +0800
@@ -177,15 +177,15 @@
 
   /* high half of unsigned char is locale-specific, so all tests are
      false in "C" locale */
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
 
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
-  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
+  L, L, L, L,  L, L, L, L,  L, L, L, L,  L, L, L, L,
 };
 
 const unsigned char _sch_tolower[256] =