Fix #2149523 - Incorrect line number reporting in errors after parsing macros. Remove extraneous extra line in preprocessed output which would sometimes lead to error/warning messages two lines after the end of the file

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12211 626c5289-ae23-0410-ae9c-e8d60b6d4f22

CHANGES.current

@@ -5,6 +5,15 @@ See the RELEASENOTES file for a summary of changes in each release.
 Version 2.0.1 (in progress)
 ===========================
 
+2010-09-10: wsfulton
+            Remove extraneous extra line in preprocessed output after including files
+            which would sometimes lead to error/warning messages two lines after the
+            end of the file.
+
+2010-09-10: wsfulton
+            Fix #2149523 - Incorrect line number reporting in errors after parsing macros
+            containing C++ comments.
+
 2010-09-08: olly
 	    [PHP] Fix handling of OUTPUT typemaps (Patch from Ryan in SF#3058394).
 

Examples/test-suite/errors/make.sh

@@ -26,13 +26,15 @@ c_varargs
 c_varargs_neg
 nomodule
 pp_badeval
-pp_deprecated
+pp_constant
 pp_defined
-pp_macro_defined_unterminated
+pp_deprecated
 pp_illegal_argument
 pp_macro_args
 pp_macro_badchar
+pp_macro_defined_unterminated
 pp_macro_expansion
+pp_macro_inline_unterminated
 pp_macro_nargs
 pp_macro_redef
 pp_macro_rparen

Examples/test-suite/errors/pp_constant.i

@@ -0,0 +1,43 @@
+%module xxx
+
+/* Test preprocessor comments and their effect on line number reporting on later errors */
+
+#define A1 1234
+#define A2 1234 /*C comment*/
+#define A3 1234
+
+%constant int aaa=;
+
+#define B1 1234
+#define B2 1234 //C++ comment
+#define B3 1234
+
+%constant int bbb=;
+
+#define C1 1234
+#define C2 1234 /*multiline
+C 
+comment */
+#define C3 1234
+
+%constant int ccc=;
+
+#define D1 1234
+#define /*C Comment*/ D2 1234
+#define D3 1234
+
+%constant int ddd=;
+
+#define E1 1234
+#/*C comment*/define E2 1234
+#define E3 1234
+
+%constant int eee=;
+
+#define F1 1234
+#define F2 1234 \
+// C comment
+#define F3 1234
+
+%constant int fff=;
+

Examples/test-suite/errors/pp_macro_inline_unterminated.i

@@ -0,0 +1,11 @@
+%module xxx
+
+%define foo(a,x)
+int ii;
+%enddef
+
+%inline %{
+struct Struct {
+foo(2,
+};
+%}

Source/Preprocessor/cpp.c

@@ -1445,15 +1445,14 @@ String *Preprocessor_parse(String *s) {
 	state = 43;
       }
       break;
-    case 46:
+    case 46: /* in C++ comment */
       if (c == '\n') {
 	Ungetc(c, s);
-	cpp_lines++;
 	state = 50;
       } else
 	Putc(c, comment);
       break;
-    case 47:
+    case 47: /* in C comment */
       if (c == '*')
 	state = 48;
       else
@@ -1638,7 +1637,7 @@ String *Preprocessor_parse(String *s) {
 	    }
 	    s2 = Preprocessor_parse(s1);
 	    addline(ns, s2, allow);
-	    Append(ns, "\n]");
+	    Append(ns, "]");
 	    if (dirname) {
 	      Swig_pop_directory();
 	    }
@@ -1784,7 +1783,7 @@ String *Preprocessor_parse(String *s) {
 		pop_imported();
 	      }
 	      addline(ns, s2, allow);
-	      Append(ns, "\n]");
+	      Append(ns, "]");
 	      Delete(s2);
 	      Delete(s1);
 	    }
@@ -1845,7 +1844,6 @@ String *Preprocessor_parse(String *s) {
 		  Seek(value, 0, SEEK_SET);
 		  Preprocessor_define(value, 1);
 		}
-		/* Putc('\n',ns); */
 		addline(ns, value, 0);
 		state = 0;
 	      }
@@ -1884,6 +1882,5 @@ String *Preprocessor_parse(String *s) {
   Delete(comment);
   Delete(chunk);
 
-  /*  fprintf(stderr,"cpp: %d\n", Len(Getattr(cpp,"symbols"))); */
   return ns;
 }

Source/Swig/include.c

@@ -221,6 +221,8 @@ String *Swig_read_file(FILE *f) {
     Append(str, buffer);
   }
   len = Len(str);
+  /* Add a newline if not present on last line -- the preprocessor seems to 
+   * rely on \n and not EOF terminating lines */
   if (len) {
     char *cstr = Char(str);
     if (cstr[len - 1] != '\n') {