[STDCXX-541] std::char_traits<char>::find fails to find characters from the extended ASCII set

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.2.0
• Fix Version/s: 4.2.0
• Component/s: 21. Strings

Environment

~$ uname -a
Linux servici 2.6.21 #2 SMP PREEMPT Thu May 24 06:37:50 MDT 2007 i686 unknown unknown GNU/Linux
~$ gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.2.0/configure --prefix=/opt/compilers/gcc-4.2.0 --enable-threads --enable-shared --enable-languages=c,c++
Thread model: posix
gcc version 4.2.0

• Assignee: Liviu Nicoara
• Reporter: Liviu Nicoara
• Created: 30/Aug/07 20:22
• Updated: 22/Apr/08 03:56
• Resolved: 07/Sep/07 23:55

Description

The following program asserts:

$ cat t.cpp
#include <string>
#include <assert.h>

int
main ()
{
assert (std::char_traits< char >::find ("a\201", 2, '\201'));
return 0;
}

$ make t && ./t
gcc -c -I/build/nicoara/stdcxx/include/ansi -D_RWSTDDEBUG -I/build/nicoara/stdcxx/include -I/build/nicoara/stdcxx/build/include -I/build/nicoara/stdcxx/examples/include -pedantic -nostdinc++ -g -W -Wall -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long -Wcast-align /build/nicoara/stdcxx/examples/manual/t.cpp
gcc t.o -o t -L/build/nicoara/stdcxx/build/lib -lstd11s -lsupc++ -lm
t: /build/nicoara/stdcxx/examples/manual/t.cpp:7: int main(): Assertion `std::char_traits< char >::find ("a\201", 2, '\201')' failed.
Aborted

possibly because of the way memchr is used in include/rw/_traits.h:409

Thanks,
Liviu