libstdc++/9408: std::string input operator waits for EOF

[Kelly Fitz]

I expect the behavior you describe, but that is not the behavior I see.  
When I compile and execute that code, I get:

sal% ./moo
enter a string:
dddd<CR>
<CR>
<CR>
<CR><^D>
read: dddd




sal%

Carriage returns are not skipped, and nothing happens until I enter  
ctl-D.

Here are the details of my configuration:

sal% g++3 -v -save-temps -Wall -o moo moo.ccReading specs from  
/usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/specsc- 
3.Configured with: ../gcc-3.2.1/configure --prefix=/usr/local/gcc-3.2.1  
: (reconfigured) ../gcc-3.2.1/configure --prefix=/usr/local/gcc-3.2.1 :  
(reconfigured) ../gcc-3.2.1/configure --prefix=/usr/local/gcc-3.2.1  
--enable-threadscc /usr/local/gcc-3.2.1/lib/gThread model:  
posixx-gnu/3.2.1/crtend.o /usr/lib/crtn.o
gcc version 3.2.1
  /usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/cpp0  
-lang-c++ -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -v -D__GNUC__=3  
-D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=1 -D__GXX_ABI_VERSION=102  
-D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__  
-D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix  
-D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386  
-Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__  
-D__tune_pentiumpro__ moo.cc -Wall moo.ii
GNU CPP version 3.2.1 (cpplib) (i386 Linux/ELF)
ignoring nonexistent directory  
"/usr/local/gcc-3.2.1/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
  /usr/local/gcc-3.2.1/include/c++/3.2.1
  /usr/local/gcc-3.2.1/include/c++/3.2.1/i686-pc-linux-gnu
  /usr/local/gcc-3.2.1/include/c++/3.2.1/backward
  /usr/local/include
  /usr/local/gcc-3.2.1/include
  /usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/include
  /usr/include
End of search list.
  /usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/cc1plus  
-fpreprocessed moo.ii -quiet -dumpbase moo.cc -Wall -version -o moo.s
GNU CPP version 3.2.1 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.2.1 (i686-pc-linux-gnu)
         compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1  
2.96-81).
  as --traditional-format -V -Qy -o moo.o moo.s
GNU assembler version 2.10.91 (i386-redhat-linux) using BFD version  
2.10.91.0.2
  /usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/collect2 -m  
elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o moo /usr/lib/crt1.o  
/usr/lib/crti.o  
/usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/crtbegin.o  
-L/usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1  
-L/usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/../../..  
moo.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc  
/usr/local/gcc-3.2.1/lib/gcc-lib/i686-pc-linux-gnu/3.2.1/crtend.o  
/usr/lib/crtn.o


I can also send you the configuration information for another  
installation (on another RedHat system) of the same version (3.2.1)  
that exhibits the behavior I have described.

How should I proceed? I am trying to use this version of g++ to teach  
C++ to a class of sophomores, and this very basic code from our text  
doesn't execute correctly. Could we possibly have mis-configured the  
compiler build? Do we need to step back to an earlier version?

Any recommendations that you can offer will be greatly appreciated.
-kel

On Wednesday, January 22, 2003, at 02:22 PM, paolo@gcc.gnu.org wrote:

> Synopsis: std::string input operator waits for EOF
>
> Responsible-Changed-From-To: unassigned->paolo
> Responsible-Changed-By: paolo
> Responsible-Changed-When: Wed Jan 22 22:22:40 2003
> Responsible-Changed-Why:
>     .
> State-Changed-From-To: open->feedback
> State-Changed-By: paolo
> State-Changed-When: Wed Jan 22 22:22:40 2003
> State-Changed-Why:
>     Which behaviour do you expect, exactly?
>     I can't find nothing wrong with the current one:
>     paolo:~> g++ 9408.cc
>     paolo:~> a.out
>     enter a string:
>     ddddd<CR>
>     read: ddddd
>
> http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
> trail&database=gcc&pr=9408
>
Kelly Fitz
School of Electrical Engineering and Computer Science
Washington State University
kfitz@eecs.wsu.edu