[Bug c/39027] New: double floating point suffix of 'd' and 'D' not accepted

[Bug c/39027] New: double floating point suffix of 'd' and 'D' not accepted

[tydeman at tybor dot com]

With C command line option -std=gnu99
double floating-point constants with either 'd' or 'D' suffix
are not accepted by gcc 4.3.2-7 running on Intel x86/x87 Pentium 4
running Fedora Core 10 Linux
Part of gcc -v is:
gcc version 4.3.2 20081105 (Red Hat 4.3.2-7) (GCC) 

#define __STDC_WANT_DEC_FP__ /* Tell implementation that we want Decimal FP */
double d1 = 1.0d;  /* binary double (yes) versus decimal double (no) */
double d2 = 2.0D;

gets
error: invalid suffix "d" on floating constant
error: invalid suffix "D" on floating constant


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           Summary: double floating point suffix of 'd' and 'D' not accepted
           Product: gcc
           Version: 4.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tydeman at tybor dot com
  GCC host triplet: 4.3.2
GCC target triplet: 4.3.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2009-01-29 19:38 -------
I think you need to configure GCC with DFP support.

Defining __STDC_WANT_DEC_FP__ is not enough.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c                           |target


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[janis at gcc dot gnu dot org]

------- Comment #2 from janis at gcc dot gnu dot org  2009-01-29 21:20 -------
In the C99 standard, floating constants are defined in section 6.4.4.2.  A
floating constant of type double is unsuffixed; there is no 'd' or 'D' suffix. 
Unless I'm missing something the test case is invalid.


-- 

janis at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |janis at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[tydeman at tybor dot com]

------- Comment #3 from tydeman at tybor dot com  2009-01-29 21:52 -------
The Decimal Floating-Point Technical Report (WG14/N1176 and later) added
the suffixes 'd' and 'D' to indicate (binary) double, and 'dd' and 'DD' to 
indicate decimal double (_Decimal64).  The suffixes 'd' and 'D'
are in addition to unsuffixed decimal floating constants (all three
mean 'double').  This is pages 12 and 13 in N1176, section 7 Constants,
which is changing C99 section 6.4.4.2 floating-suffix.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[janis at gcc dot gnu dot org]

------- Comment #4 from janis at gcc dot gnu dot org  2009-01-29 21:57 -------
We missed that.  This is indeed a bug.


-- 

janis at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bje at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-01-29 21:57:00
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[janis at gcc dot gnu dot org]

-- 

janis at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl dot tools at gmail dot
                   |                            |com
         AssignedTo|unassigned at gcc dot gnu   |janis at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2009-01-29 21:57:00         |2009-01-30 20:50:51
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[janis at gcc dot gnu dot org]

------- Comment #5 from janis at gcc dot gnu dot org  2009-05-04 19:55 -------
This was fixed in trunk, expected to become GCC 4.5.0, on 2009-04-01 as
revision 145422.  The ChangeLog entries have the correct PR number but the svn
log messages use 29027, which is why the checkins were not recorded here.


-- 

janis at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

[Bug target/39027] double floating point suffix of 'd' and 'D' not accepted

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39027

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
r0-92283-g839a3b8ab591c7