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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
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/17639] ++ increment not working in std::string.insert
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 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-23 20:54 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-23 20:54 -------
The code you posted is undefined, you are modifing i and also getting the value of i without a sequence
point inbetween them.
*** This bug has been marked as a duplicate of 11751 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
Summary|++ increment not working in |++ increment not working in
|std::string.insert |std::string.insert
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17639
^ permalink raw reply [flat|nested] 2+ messages in thread
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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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