[STDCXX-402] long long stream extraction fails for strings longer than 9 decimal characters

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.2, 4.1.3, 4.1.4
• Fix Version/s: 4.2.0
• Component/s: 27. Input/Output

Environment

$ uname -a
Linux cyberdyne 2.6.17.8 #9 SMP PREEMPT Wed Nov 22 09:34:35 EST 2006 i686 unknown unknown GNU/Linux

$ gcc -v
Using built-in specs.
Target: i486-slackware-linux
Configured with: ../gcc-src/configure -prefix=/opt/compilers/gcc-4.1.2 --enable-shared --enable-threads=posix --enable__cxa_atexit --disable-checking --with-gnu-ld --verbose --target=i486-slackware-linux --host=i486-slackware-linux --enable-languages=c,c++
Thread model: posix
gcc version 4.1.2

Built a 15s version of the library.

• Severity: Incorrect Behavior
• Assignee: Martin Sebor
• Reporter: Liviu Nicoara
• Created: 07/May/07 16:17
• Updated: 27/Oct/07 21:28
• Resolved: 29/May/07 22:47

Description

The following test case:

$ cat t.cpp
#include <ios>
#include <iostream>
#include <sstream>

int
main ()
{
long long n = 0;

{ std::stringstream s (std::string ("214748364")); s >> n; std::cout << n << "\n"; } { std::stringstream s (std::string ("2147483640")); s >> n; std::cout << n << "\n"; }

return 0;
}

Produces inconsistent (but consistently wrong) results in different runs:

$ ./t
214748364
9223372036854775807
$ ./t
214748364
214748365089
$ ./t
214748364
9223372036854775807

Liviu