libstdc++/9828: Regression: Segmentation fault in num_put::put
Mon Feb 24 09:26:00 GMT 2003

>Number:         9828
>Category:       libstdc++
>Synopsis:       Regression: Segmentation fault in num_put::put
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 24 09:26:00 UTC 2003
>Release:        gcc version 3.4 20030222 (experimental)
Red Hat Linux 8.0.
num_put<CharT>::put causes a segmentation fault if the ios_base argument is not an object of type basic_ios<CharT, Traits> (for example if CharT is wchar_t and cout is used for the ios_base argument). This works OK in gcc-3.2.1.
See attachment.

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#include <sstream>
#include <iostream>
#include <locale>

int main()
	using namespace std;
	typedef num_put<wchar_t> npw_t;

	wostringstream stream;
	const npw_t& npw = use_facet<npw_t>(stream.getloc());

	npw.put(stream, cout, L' ', static_cast<long>(10));
	return 0;

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