Subject: [Boost-bugs] [Boost C++ Libraries] #10388: null character at end of string from filesystem::temp_directory_path
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-08-21 12:15:13
#10388: null character at end of string from filesystem::temp_directory_path
------------------------------+------------------------
Reporter: anonymous | Owner: bemandawes
Type: Bugs | Status: new
Milestone: To Be Determined | Component: filesystem
Version: Boost 1.56.0 | Severity: Problem
Keywords: |
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The null character at end of string causes very interesting bugs that are
hard to debug.
Workaround we learned to use is .c_str():
filesystem::path temp_path = filesystem::temp_directory_path( ec
).c_str();
Cause of bug:
GetTempPathW(0, 0) returns the size of buffer enought to contain the path,
but is might be bigger than (path length + 1). (It rarely happens, but
happens.)
However the function filesystem::temp_directory_path expects it to be
exactly (path length + 1).
Solution:
replace lines
buf.pop_back();
path p(buf.begin(), buf.end());
with
path p(buf.begin());
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/10388> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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