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