* cpplib.c (collect_expansion): Don't escape '@' inside string.

From-SVN: r9744

diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index 6517deb..989c64d 100644 (file)
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -1310,7 +1310,10 @@ collect_expansion (pfile, buf, limit, nargs, arglist)
        break;
 
       case '@':
-       *exp_p++ = c;
+       /* An '@' in a string or character constant stands for itself,
+          and does not need to be escaped. */
+       if (!expected_delimiter)
+         *exp_p++ = c;
        break;
 
       case '#':