[Bug preprocessor/18502] New: trigraphs don't work with -std=gnu99

[Bug preprocessor/18502] New: trigraphs don't work with -std=gnu99

[rwxr-xr-x at gmx dot de]

Hello,

$ echo '??-' | gcc -P -E -trigraphs -std=gnu99 -trigraphs -
<stdin>:1:1: warning: trigraph ??- ignored, use -trigraphs to enable
??-
$

That shouldn't happen. Apparently -trigraphs is ignored with -std=gnu99. Weird.

Lukas

-- 
           Summary: trigraphs don't work with -std=gnu99
           Product: gcc
           Version: 3.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: preprocessor
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rwxr-xr-x at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18502

[Bug c/18502] trigraphs don't work with -std=gnu99

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-15 15:15 -------
Confirmed, the problem is either in the C front-end (which is really the code which drives the 
preprocessor library) or in the C driver part:
 /Users/pinskia/local/libexec/gcc/powerpc-apple-darwin7.6.0/4.0.0/cc1 -E -quiet -v -P -trigraphs 
-trigraphs -D__DYNAMIC__ -D__APPLE_CC__=1 - -fPIC -std=gnu99

Note how -std=gnu99 is done after -trigraphs.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|preprocessor                |c
     Ever Confirmed|                            |1
           Keywords|                            |diagnostic
   Last reconfirmed|0000-00-00 00:00:00         |2004-11-15 15:15:48
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18502

[Bug c/18502] trigraphs don't work with -std=gnu99

[joseph at codesourcery dot com]

------- Additional Comments From joseph at codesourcery dot com  2004-11-15 15:51 -------
Subject: Re:  trigraphs don't work with -std=gnu99

On Mon, 15 Nov 2004, pinskia at gcc dot gnu dot org wrote:

> Confirmed, the problem is either in the C front-end (which is really the code which drives the 
> preprocessor library) or in the C driver part:
>  /Users/pinskia/local/libexec/gcc/powerpc-apple-darwin7.6.0/4.0.0/cc1 -E -quiet -v -P -trigraphs 
> -trigraphs -D__DYNAMIC__ -D__APPLE_CC__=1 - -fPIC -std=gnu99
> 
> Note how -std=gnu99 is done after -trigraphs.

In that case the sorting needs to be disabled between these options just 
as -ansi and -std options are sorted together in specs (%{std*&ansi}, was 
bug 11459).



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18502

[Bug c/18502] [3.3/3.4/4.0 Regression] trigraphs don't work with -std=gnu99

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-02-01 23:29 -------
This is a regression from 3.0.x.  Working on a patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jsm28 at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
      Known to fail|                            |3.2.3 3.3.4 3.4.3 4.0.0
      Known to work|                            |3.0.4
   Last reconfirmed|2004-11-15 15:15:48         |2005-02-01 23:29:25
               date|                            |
            Summary|trigraphs don't work with - |[3.3/3.4/4.0 Regression]
                   |std=gnu99                   |trigraphs don't work with -
                   |                            |std=gnu99
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18502

[Bug c/18502] [3.3/3.4 Regression] trigraphs don't work with -std=gnu99

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-01 10:33 -------
Subject: Bug 18502

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	jsm28@gcc.gnu.org	2005-05-01 10:33:40

Modified files:
	gcc            : ChangeLog gcc.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: pr11459-1.c pr18502-1.c 

Log message:
	PR c/11459
	PR c/18502
	* gcc.c (cpp_unique_options): Remove %{trigraphs}.
	(cpp_options, cc1_options): Change %{std*} %{ansi} to
	%{std*&ansi&trigraphs}.
	
	testsuite:
	* gcc.dg/pr11459-1.c, gcc.dg/pr18502-1.c: New tests.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.845&r2=2.2326.2.846
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcc.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.403.4.11&r2=1.403.4.12
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.382&r2=1.3389.2.383
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr11459-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.54.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr18502-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.28.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18502

[Bug c/18502] [3.3/3.4 Regression] trigraphs don't work with -std=gnu99

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-05-03 20:04 -------
Fixed for 3.4.4.  Will not now be fixed on 3.3 branch.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18502