[Bug c++/104095] New: g++ diagnosis may use non-standard terminology: "constant" instead of "literal", "integer" instead of "integral"

[Bug c++/104095] New: g++ diagnosis may use non-standard terminology: "constant" instead of "literal", "integer" instead of "integral"

[pavel.morozkin at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104095

            Bug ID: 104095
           Summary: g++ diagnosis may use non-standard terminology:
                    "constant" instead of "literal", "integer" instead of
                    "integral"
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pavel.morozkin at gmail dot com
  Target Milestone: ---

$ g++ t589.cpp -std=c++17 -pedantic -Wall -Wextra -c
t589.cpp:24:22: error: overflow in constant expression [-fpermissive]
   24 | enum { y = (int)(1e10) };
      |                      ^
t589.cpp:24:22: error: overflow in constant expression [-fpermissive]
t589.cpp:24:22: error: enumerator value for ‘y’ is not an integer constant

С++ standard does not have "integer constant". С++ standard has "integral
constant".

$ g++ t589.cpp -std=c++11 -pedantic -c
t589.cpp:25:11: warning: use of C++17 hexadecimal floating constant
   25 | float f = 0x0.123p-1f;

С++ standard does not have "hexadecimal floating constant". С++ standard has
"hexadecimal floating literal".

$ g++ t589.cpp -std=c++17 -pedantic -c
t589.cpp:25:1: warning: floating constant truncated to zero [-Woverflow]
   25 | float f = 0x0.123333p-1000f;

С++ standard does not have "floating constant". С++ standard has "floating
literal".

[Bug c++/104095] g++ diagnosis may use non-standard terminology: "constant" instead of "literal", "integer" instead of "integral"

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104095

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Pavel M from comment #0)
> С++ standard does not have "integer constant". С++ standard has "integral
> constant".

The standard has "integral constant expression". There are only a handful of
uses of "integral constant" and they're arguably mistakes that should be
changed.

> С++ standard does not have "hexadecimal floating constant". С++ standard has
> "hexadecimal floating literal".

The standard has "hexadecimal-floating-point-literal".

> С++ standard does not have "floating constant". С++ standard has "floating
> literal".

The standard has "floating-point-literal".

Both of those cases are grammar productions. GCC's diagnostics do not
necessarily refer to that formal term, because they're user-facing, and not
part of a BNF grammar.

Not all programmers are familiar with the terminology of the standard. If a
simpler or more colloquial term exists, it might be more user friendly to use
that. In all cases above, the term used by GCC is shorter than the formal term
from the standard.

That said, I do think "floating constant" should be improved.

[Bug c++/104095] g++ diagnosis may use non-standard terminology: "constant" instead of "literal", "integer" instead of "integral"

[de34 at live dot cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104095

Jiang An <de34 at live dot cn> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |de34 at live dot cn

--- Comment #2 from Jiang An <de34 at live dot cn> ---
C standard says "floating constant" while C++ standard says "floating-point
literal".

I wonder whether it makes sense for gcc to say different standardese terms for
C and C++...