[#STDCXX-949] 27.filebuf test fails with assertions

C++ Standard Library

27.filebuf test fails with assertions

Created: 03/Jun/08 09:28 AM Updated: 03/Jun/08 09:00 PM

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Component/s:

27. Input/Output, Tests

Affects Version/s:

4.2.1

Fix Version/s:

4.2.2

Time Tracking:

Original Estimate:

Remaining Estimate:

0.5h

Time Spent:

0.5h

File Attachments:

	File Name	Date Attached	Attached By	Size
	stdcxx-949.patch	2008-06-03 09:50 AM	Farid Zaripov	2 kB

Environment:

All

Patch Info:	Patch Available
Severity:	Incorrect Behavior

Description

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The 27.filebuf test fails with the following assertions and warnings:

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<char>::is_open() == false, got true after a call to detach()
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1424

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<char>::fd() < 0, got 3 after a call to detach()()
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1431

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<char>::~basic_filebuf() attempted to close a detached file descriptor
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1443

# WARNING (S5) (5 lines):
# TEXT: std::remove("C:\Temp\.rwtest-tmp11") failed: Permission denied
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1519

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<char>::is_open() unexpectedly true after a successful call to detach()
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1593

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<wchar_t>::is_open() == false, got true after a call to detach()
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1424

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<wchar_t>::fd() < 0, got 3 after a call to detach()()
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1431

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<wchar_t>::~basic_filebuf() attempted to close a detached file descriptor
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1443

# WARNING (S5) (5 lines):
# TEXT: std::remove("C:\Temp\.rwtest-tmp12") failed: Permission denied
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1519

# ASSERTION (S7) (5 lines):
# TEXT: basic_filebuf<wchar_t>::is_open() unexpectedly true after a successful call to detach()
# CLAUSE: [lib.filebuf]
# FILE: 27.filebuf.cpp
# LINE: 1593

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Farid Zaripov added a comment - 03/Jun/08 09:50 AM

The proposed patch is attached.

ChangeLog:

2008-06-03  Farid Zaripov  <farid_zaripov@epam.com>

	* include/fstream.cc (close): Zero out file pointer even when close() is
	called from detach() and all data flushed successfully.
	* tests/iostream/27.filebuf.cpp (test_ctors): Detach pfb from file pointer
	before delete because of the file is already closed in fb dtor.
	(test_attach): Close file descriptor before removing the file.