[Bug build/13966] Some elf tests fail with "fatal error: cstdio: No such file or directory" on trunk

["carlos_odonell at mentor dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=13966

Carlos O'Donell <carlos_odonell at mentor dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |glibc_2.15
             Status|NEW                         |ASSIGNED
   Last reconfirmed|                            |2012-04-10
                 CC|                            |carlos_odonell at mentor
                   |                            |dot com
         AssignedTo|unassigned at sourceware    |carlos_odonell at mentor
                   |dot org                     |dot com
              Flags|                            |review?(joseph at
                   |                            |codesourcery dot com)

--- Comment #2 from Carlos O'Donell <carlos_odonell at mentor dot com> 2012-04-10 17:54:51 UTC ---
Octoploid,

Thanks for the patch!

I don't know how this worked in the past.

Compiling a C++ application with -nostdinc is not going to work.

Adding -nostdinc removes:

 /usr/include/c++/4.5
 /usr/include/c++/4.5/i686-linux-gnu
 /usr/include/c++/4.5/backward
 /usr/local/include
 /usr/include/i386-linux-gnu
 /usr/include

And glibc doesn't provide back the required headers to build a C++ application.

I can reproduce this on my x86 build/test system, in fact you can see the
failures in the 2.15 known issues:
http://sourceware.org/glibc/wiki/Release/2.15

Joseph,

Do you have any idea about the right fix for this?

The use of C++ applications in the testsuite won't work reliably without C++
headers.

I have no objection to applying Octoploid's patch since it fixes the
*immediate* testsuite failures that you can see are present in 2.15 known
issues.

Should glibc's testsuite infrastructure add back:
 /usr/include/c++/4.5
 /usr/include/c++/4.5/i686-linux-gnu
 /usr/include/c++/4.5/backward

e.g. add back only the C++ header directories?

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