Error in formatting of infinity

• Key: STDCXX-461
• Type: Bug
• Status: Resolved
• Resolution: Fixed
• Priority: Minor
• Assignee: Martin Sebor
• Reporter: Jeremy Dean
• Component/s: 22. Localization
• Affects Version/s: 4.1.3
• Fix Version/s: 4.2.0

Description

referrenced in e-mail thread:
http://mail-archives.apache.org/mod_mbox/incubator-stdcxx-dev/200706.mbox/ajax/[e-mail]%3e

But the test program does demonstrate a real problem, and that is the formatting of infinity when the stream precision is greater than 7. It looks as though the num_put facet inserts the string "inf\0\0ity" into the stream rather than "inf".

$ cat u.cpp && make u && ./u | od -c
#include <cassert>
#include <iostream>
#include <sstream>

int main () {
std::ostringstream s;
s.precision (8);
s << 1 / 0.0;
std::cout << s.str () << '\n';
assert (s.str () == "inf");
}
gcc -c -I/build/sebor/stdcxx/include/ansi -D_RWSTDDEBUG -D_RWSTD_USE_CONFIG -I/build/sebor/stdcxx/include -I/build/sebor/stdcxx-gcc-4.1.0-11s/include
-I/build/sebor/stdcxx/examples/include -pedantic -nostdinc++ -g -W
-Wall -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long u.cpp
u.cpp: In function 'int main()':
u.cpp:8: warning: division by zero in '1 / 0.'
gcc u.o -o u -L/build/sebor/stdcxx-gcc-4.1.0-11s/lib -lstd11s -lsupc++ -lm Assertion failed: s.str () == "inf", file u.cpp, line 10
0000000 i n f \0 \0 i t y \n
0000011