+2002-11-18 Jonathan Lennox <lennox@cs.columbia.edu>
+
+ * include/bits/streambuf.tcc (__copy_streambufs): verify
+ __sbin->gptr() + __bufsize < __sbin->egptr() before using.
+ * testsuite/27_io/ostream_inserter_other.cc (test_buffer_4): Add.
+ (test05): Use test_buffer_4. Delete unused ostringstream
+ variables.
+
2002-11-18 Paolo Carlini <pcarlini@unitus.it>
PR libstdc++/6745 (continued)
{
while (__testput && __bufsize != -1)
{
- if (__bufsize != 0 && __sbin->gptr() != NULL)
+ if (__bufsize != 0 && __sbin->gptr() != NULL
+ && __sbin->gptr() + __bufsize <= __sbin->egptr())
{
__xtrct = __sbout->sputn(__sbin->gptr(), __bufsize);
__ret += __xtrct;
std::string::const_iterator it;
};
+class test_buffer_4 : public std::streambuf {
+public:
+ test_buffer_4(const std::string& s) : str(s), it(str.begin())
+ {
+ if (it != str.end()) {
+ buf[0] = *it++;
+ setg(buf, buf, buf+1);
+ }
+ }
+
+protected:
+ virtual int underflow() { return (it != str.end() ? *it : EOF); }
+ virtual int uflow() { return (it != str.end() ? *it++ : EOF); }
+ virtual std::streamsize showmanyc() {
+ std::streamsize ret = std::distance(it, str.end());
+ return ret > 0 ? ret : -1;
+ }
+private:
+ const std::string str;
+ std::string::const_iterator it;
+ char buf[1];
+};
void test(const std::string& str, std::streambuf& buf)
{
// Jonathan Lennox <lennox@cs.columbia.edu>
void test05()
{
- std::ostringstream out_1, out_2, out_3, out_4;
-
std::string string_a("Hello, world!");
std::string string_b("");
test_buffer_3 buf3a(string_a);
test_buffer_3 buf3b(string_b);
+ test_buffer_4 buf4a(string_a);
+ test_buffer_4 buf4b(string_b);
+
test(string_a, buf1a);
test(string_b, buf1b);
test(string_a, buf3a);
test(string_b, buf3b);
+
+ test(string_a, buf4a);
+ test(string_b, buf4b);
}
int