Fix handling of // comments inside macro arguments

/* */ are already handled correctly.

This completes the fix from commit
624ec3e1b7dd8908b37ee86bce6f60423c915bc5 related to swig/swig#974.

1 files changed, 11 insertions, 0 deletions

diff --git a/Source/Preprocessor/cpp.c b/Source/Preprocessor/cpp.c
index 10018a787..af1775007 100644
--- a/Source/Preprocessor/cpp.c
+++ b/Source/Preprocessor/cpp.c
@@ -610,6 +610,7 @@ static List *find_args(String *s, int ismacro, String *macro_name) {
       } else if (c == '/') {
         /* Ensure comments are ignored by eating up the characters */
         c = Getc(s);
+        /* Handle / * ... * / type comments (multi-line) */
         if (c == '*') {
           while ((c = Getc(s)) != EOF) {
             if (c == '*') {
@@ -621,6 +622,16 @@ static List *find_args(String *s, int ismacro, String *macro_name) {
           c = Getc(s);
           continue;
         }
+        /* Handle // ... type comments (single-line) */
+        if (c == '/') {
+          while ((c = Getc(s)) != EOF) {
+            if (c == '\n') {
+                break;
+            }
+          }
+          c = Getc(s);
+          continue;
+        }
         /* ensure char is available in the stream as this was not a comment*/
         Ungetc(c, s);
         c = '/';