0001321: std::ifstream segfaults in reading data, when no file is open

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Category

Severity

Reproducibility

Date Submitted

Last Update

0001321

[uClibc++] Other

crash

always

04-22-07 06:43

04-27-07 17:51

Reporter

tommi

View Status

public

Assigned To

gkajmowi

Priority

normal

Resolution

fixed

Status

resolved

Product Version

Summary

0001321: std::ifstream segfaults in reading data, when no file is open

Description

Reading from a std::ifstream without opening a file, results in a segfault. A simple case, which shows that bug is this:

#include <fstream>
int main(int argc, char* argv[])
{
std::ifstream in;
in.get();
}

Reading from ifstream without a open file is expected to return traits::eof() instead of just crashing. The reason for the crash is, that basic_filebuf::underflow does not check this condition.

Additional Information

Patch attached

Attached Files

fstream-eof.diff [^] (330 bytes) 04-22-07 06:43

Relationships

Notes
(0002332) gkajmowi 04-27-07 17:51	Fixed in SVN. I used a slightly different approach to fixing, though the result is essentially the same.

Issue History
Date Modified	Username	Field	Change
04-22-07 06:43	tommi	New Issue
04-22-07 06:43	tommi	Status	new => assigned
04-22-07 06:43	tommi	Assigned To	=> gkajmowi
04-22-07 06:43	tommi	File Added: fstream-eof.diff
04-27-07 17:51	gkajmowi	Status	assigned => resolved
04-27-07 17:51	gkajmowi	Fixed in Version	=> 0.2.2
04-27-07 17:51	gkajmowi	Resolution	open => fixed
04-27-07 17:51	gkajmowi	Note Added: 0002332