(cpp_lex): Correctly parse character constants.

From-SVN: r10566

diff --git a/gcc/cppexp.c b/gcc/cppexp.c
index 7a9079417880b2c0bc3adf522557fb8cd102602c..6b73ad34e4dce09d6edfc7af74662e1755a0f680 100644 (file)
--- a/gcc/cppexp.c
+++ b/gcc/cppexp.c
@@ -357,11 +357,9 @@ cpp_reader *pfile;
        else
            max_chars = MAX_LONG_TYPE_SIZE / width;
 
-       while (1)
+       ++ptr;
+       while (ptr < tok_end && ((c = *ptr++) != '\''))
          {
-           if (ptr >= CPP_PWRITTEN (pfile) || (c = *ptr++) == '\'')
-             break;
-
            if (c == '\\')
              {
                c = cpp_parse_escape (pfile, &ptr);