Re: Failing to emit # directives for #line N "foo"

[Alexandre Oliva <oliva at lsd dot ic dot unicamp dot br>]

On Feb 16, 2000, Alexandre Oliva <oliva@lsd.ic.unicamp.br> wrote:

> You'll notice that the error message printed by GCC refers to cpp-1.c,
> not to `foo' as it should because of the #line directive.

> Any ideas about how to test for this error in the testsuite?

Here's the testcase I've just installed.

/* Copyright (C) 2000  Free Software Foundation.

   by Alexandre Oliva  <oliva@lsd.ic.unicamp.br>  */

/* { dg-do preprocess } */

/* The line number below must be just a few lines greater than the
   actual line number. */
#line 10 "baz"

/*
  { dg-final { if \{ [grep cpp-li1.i baz] != "" \} \{ } }
  { dg-final {   pass "cpp-li1.i: #line directive optimization" } }
  { dg-final { \} else \{ } }
  { dg-final {   fail "cpp-li1.i: #line directive optimization" } }
  { dg-final { \} } }
*/

While I was at it, I added two other testcases:

/* Copyright (C) 2000  Free Software Foundation.

   by Alexandre Oliva  <oliva@lsd.ic.unicamp.br>  */

/* { dg-do preprocess } */

#line 1
#line 0 
#line 2
#line 32768 

/* { dg-error "out of range" "line # too low" { target *-*-* } 1 } */
/* { dg-error "out of range" "line # too high" { target *-*-* } 2 } */
/* Copyright (C) 2000  Free Software Foundation.

   by Alexandre Oliva  <oliva@lsd.ic.unicamp.br>  */

/* { dg-do preprocess } */

#line 1 L"foo" /* { dg-error "not a string" "wide string in #line" } */
#include L"stdio.h" /* { dg-error "expects" "wide string in #include" } */
#pragma implementation L"test.h" /* { dg-error "malformed" "wide string in #pragma implementation" } */

-- 
Alexandre Oliva     http://www.ic.unicamp.br/~oliva/     Enjoy Guaranį
Cygnus Solutions, a Red Hat company        aoliva@{redhat, cygnus}.com
Free Software Developer and Evangelist    CS PhD student at IC-Unicamp
oliva@{lsd.ic.unicamp.br, gnu.org}   Write to mailing lists, not to me