[Bug c++/114740] New: i686-linux-gnu-g++ does not interpret floating point literals as double

[Bug c++/114740] New: i686-linux-gnu-g++ does not interpret floating point literals as double

[gnu.ojxq8 at dralias dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114740

            Bug ID: 114740
           Summary: i686-linux-gnu-g++ does not interpret floating point
                    literals as double
           Product: gcc
           Version: 13.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gnu.ojxq8 at dralias dot com
  Target Milestone: ---

Starting with i686-linux-gnu-g++-13, including 14, a floating point literal
appears to be no longer interpreted as double.

i686-linux-gnu-g++-12, and earlier, as well as clang, work fine.

Steps to reproduce:

$ echo 'int main() { return double(1e-8) == 1e-8; }' > a.cpp
$ i686-linux-gnu-g++-13 -std=c++03 test.cpp && ./a.out ; echo $?
0
$ i686-linux-gnu-g++-12 -std=c++03 test.cpp && ./a.out ; echo $?
1

[Bug c++/114740] i686-linux-gnu-g++ does not interpret floating point literals as double

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114740

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See the first item at https://gcc.gnu.org/gcc-13/changes.html#cxx

[Bug c++/114740] i686-linux-gnu-g++ does not interpret floating point literals as double

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114740

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup.

*** This bug has been marked as a duplicate of bug 92875 ***

[Bug c++/114740] i686-linux-gnu-g++ does not interpret floating point literals as double

[vincent-gcc at vinc17 dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114740

Vincent Lefèvre <vincent-gcc at vinc17 dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vincent-gcc at vinc17 dot net

--- Comment #3 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
(In reply to Jonathan Wakely from comment #1)
> See the first item at https://gcc.gnu.org/gcc-13/changes.html#cxx

The mention of -fexcess-precision in this item is unclear, because it does not
affect constants (or this is a real bug). I suspect that it means "evaluation
method" (FLT_EVAL_METHOD).

[Bug c++/114740] i686-linux-gnu-g++ does not interpret floating point literals as double

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114740

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It certainly does affect constants.