Subject: [Boost-bugs] [Boost C++ Libraries] #11146: iostreams seekpos/seekoff must not throw exceptions
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-03-26 16:23:37
#11146: iostreams seekpos/seekoff must not throw exceptions
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Reporter: stheophil@⦠| Owner: turkanis
Type: Bugs | Status: new
Milestone: To Be Determined | Component: iostreams
Version: Boost 1.57.0 | Severity: Problem
Keywords: |
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Currently, `direct_streambuf<T, Tr>::seek_impl` throws `bad_seek()`
exception on invalid input.
The current standard draft N4296 says in section 27.8.2.4 about `seekoff`:
''If the positioning operation fails, or if the constructed object cannot
represent the resultant stream position, the return value is
pos_type(off_type(-1)).''
At least the MSVC STL implementation does not expect pubseekoff/seekoff to
throw, thus does not catch the exception and the bad_seek() exception may
leak to the caller even though ios_base::exceptions() is 0.
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/11146> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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