1/* { dg-do preprocess } */
2/* { dg-options "-std=gnu99 -Wtrigraphs" } */
3
4/* Test we don't double warn for trigraphs immediately after preceding
5   text.  Source Neil Booth.  22 Nov 2000.  */
6
7abcdef??<			/* { dg-warning "ignored" } */
8123456??>			/* { dg-warning "ignored" } */
9+??=				/* { dg-warning "ignored" } */
10
11/* Test we warn of escaped newlines only in comments.  Source Neil
12   Booth.  4 May 2003.  */
13
14/* { dg-bogus "ignored" } Test ??< ??= a few ??/ random things in
15   { dg-warning "ignored" } some ??/
16   { dg-bogus "ignored" } ??< comments.  */
17
18// { dg-bogus "ignored" } More ??/ comment ??> tests.
19
20// { dg-warning "ignored" } Another ??/
21   Test
22
23// { dg-warning "ignored" } And another with space after ??/
24   the escape
25
26// { dg-bogus "ignored" } A tricky one ??/\
27
28