[Bug c++/61653] New: Warning 'literal-suffix' is not suppressed by gcc pragma

[Bug c++/61653] New: Warning 'literal-suffix' is not suppressed by gcc pragma

[ruslan_baratov at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61653

            Bug ID: 61653
           Summary: Warning 'literal-suffix' is not suppressed by gcc
                    pragma
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ruslan_baratov at yahoo dot com

Suppression of warning '-Wliteral-suffix' is not working. Example:

> cat foo.cpp
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wliteral-suffix"

#define N
const char* x = "abc"N;

#pragma GCC diagnostic pop

> g++ -Wall -std=c++11 -c foo.cpp
foo.cpp:5:17: warning: invalid suffix on literal; C++11 requires a space
between literal and string macro [-Wliteral-suffix]
 const char* x = "abc"N;

Clang works fine for the same code:
> cat foo.cpp
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wreserved-user-defined-literal"

#define N
const char* x = "abc"N;

#pragma GCC diagnostic pop

> clang++ -Wall -std=c++11 -c foo.cpp
# silence here

Version:
> g++ --version
g++ (Ubuntu 4.9-20140406-1ubuntu1) 4.9.0 20140405 (experimental) [trunk
revision 209157]
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Originally from SO:
http://stackoverflow.com/questions/24474538

[Bug c++/61653] Warning 'literal-suffix' is not suppressed by gcc pragma

[manu at gcc dot gnu.org]

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61653

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |manu at gcc dot gnu.org
         Resolution|---                         |DUPLICATE

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
#pragma GCC diagnostic does not work on warnings from the C++ preprocessor.

*** This bug has been marked as a duplicate of bug 53431 ***
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Subject: [Bug c++/53431] C++ preprocessor ignores #pragma GCC diagnostic ignored "-Wundef"
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53431

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ruslan_baratov at yahoo dot com

--- Comment #7 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
*** Bug 61653 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-455447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 01 14:15:27 2014
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Subject: [Bug preprocessor/60723] Line directives with incorrect system header flag
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`723

--- Comment #15 from christophe.lyon at st dot com ---
Created attachment 33039
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id3039&actioníit
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This preprocessed input (-E) shows how commit 212194 is broken.