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* [Bug c++/17639] New: ++ increment not working in std::string.insert
@ 2004-09-23 20:37 barnarr at cc dot wwu dot edu
2004-09-23 20:54 ` [Bug c++/17639] " pinskia at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: barnarr at cc dot wwu dot edu @ 2004-09-23 20:37 UTC (permalink / raw)
To: gcc-bugs
I posted below the code to duplicate this bug. I am performing a "i++" inside a
std::string.insert(...) function call and it appears that the "i" value is not
incrementing. This has been tested on multiple versions of GCC (2.8.1, 3.3.3,
3.3.4) running on Linux, BSD, and Windows (via Cygwin). The code does work
properly in Visual Studio .NET. I tried different -O optimizations, including
turning them off, and the problem persisted.
Compiled this code by typing:
g++ -Wall -o main ./main.cpp
Haven't reported a bug before, so I don't know what the "host triplet, target
triplet, and build triplet" things are.
Let me know if you need any more information. Hope this helps.
----------------------------------------------------------------------------
$ gcc -v
Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/specs
Configured with: /var/tmp/portage/gcc-3.3.3-r6/work/gcc-3.3.3/configure
--prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3
--includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include
--datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3
--mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/man
--infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/info --enable-shared
--host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --with-system-zlib
--enable-languages=c,c++ --enable-threads=posix --enable-long-long
--disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio
--enable-version-specific-runtime-libs
--with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.3/include/g++-v3
--with-local-prefix=/usr/local --enable-shared --enable-nls
--without-included-gettext --disable-multilib --enable-__cxa_atexit
--enable-clocale=generic
Thread model: posix
gcc version 3.3.3 20040412 (Gentoo Linux 3.3.3-r6, ssp-3.3.2-2, pie-8.7.6)
----------------------------------------------------------------------------
SOURCE CODE ----------------------------------------------------------------
----------------------------------------------------------------------------
#include <iostream>
#include <string>
using namespace std;
int main(void) {
string array1;
string array2;
int i;
array1 = "Test String #1";
array2 = "";
cout << "[" << array1 << "][" << array2 << "]" << endl;
i = 0;
while(i < (int)strlen(array1.c_str())) {
// array2.insert(i, &array1[i], 1); ++i; // <-- This line works
array2.insert(i, &array1[i++], 1); // <-- This line doesn't work
}
cout << "[" << array1 << "][" << array2 << "]" << endl;
return 0;
}
--
Summary: ++ increment not working in std::string.insert
Product: gcc
Version: 3.3.4
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: barnarr at cc dot wwu dot edu
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17639
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2004-09-23 20:37 [Bug c++/17639] New: ++ increment not working in std::string.insert barnarr at cc dot wwu dot edu
2004-09-23 20:54 ` [Bug c++/17639] " pinskia at gcc dot gnu dot org
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