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/* { dg-do preprocess } */

/* { dg-options "-std=gnu99 -Wtrigraphs" } */

/* Test we don't double warn for trigraphs immediately after preceding

   text.  Source Neil Booth.  22 Nov 2000.  */

abcdef??<                       /* { dg-warning "ignored" } */

123456??>                       /* { dg-warning "ignored" } */

+??=                            /* { dg-warning "ignored" } */

/* Test we warn of escaped newlines only in comments.  Source Neil

   Booth.  4 May 2003.  */

/* { dg-bogus "ignored" } Test ??< ??= a few ??/ random things in

   { dg-warning "ignored" } some ??/

   { dg-bogus "ignored" } ??< comments.  */

// { dg-bogus "ignored" } More ??/ comment ??> tests.

// { dg-warning "ignored" } Another ??/

   Test

// { dg-warning "ignored" } And another with space after ??/  

   the escape

// { dg-bogus "ignored" } A tricky one ??/\