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From "Travis Vitek (JIRA)" <j...@apache.org>
Subject [jira] Updated: (STDCXX-587) purify reports memory leak from __rw_tmpbuf in 20.temp.buffer.mt
Date Thu, 11 Oct 2007 23:48:50 GMT

     [ https://issues.apache.org/jira/browse/STDCXX-587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Travis Vitek updated STDCXX-587:
--------------------------------

    Attachment: stdcxx-587.patch

2007-10-11  Travis Vitek  <vitek@roguewave.com>

	STDCXX-587
	* 20.temp.buffer.mt.cpp (test_return_buffer): Set buffer pointer
	to 0 after deallocating.
	(thr_func): Provide default values for buffers. Deallocate buffers
	that remain allocated after thread loop.

> purify reports memory leak from __rw_tmpbuf in 20.temp.buffer.mt
> ----------------------------------------------------------------
>
>                 Key: STDCXX-587
>                 URL: https://issues.apache.org/jira/browse/STDCXX-587
>             Project: C++ Standard Library
>          Issue Type: Improvement
>          Components: Tests
>            Reporter: Travis Vitek
>            Priority: Minor
>             Fix For: 4.2.1
>
>         Attachments: stdcxx-587.patch
>
>
> Each test thread iterates some number of times switching on a counter. If the last iteration
runs one of the allocation functions, the temporary buffer will not be deallocated when the
thread exits.
> Purify: Searching for all memory leaks...
> Memory leaked: 42 bytes (6.98%); potentially leaked: 0 bytes (0%)
> MLK: 24 bytes leaked at 0x81089d0
>   * This memory was allocated from:
>     malloc         [rtlib.o]
>     operator new(unsigned) [libstd15d.so]
>     __rw::__rw_allocate(unsigned, int) [memory.cpp:53]
>     __rw_tmpbuf    [tmpbuf.cpp:115]
>     std::pair<long long*, int > std::get_temporary_buffer<long long, int >(int,
long long*) [_rawiter.h:138]
>     std::pair<long long*, int > std::get_temporary_buffer<long long>(int)
[_rawiter.h:153]
> MLK: 18 bytes leaked at 0x8108a38
>   * This memory was allocated from:
>     malloc         [rtlib.o]
>     operator new(unsigned) [libstd15d.so]
>     __rw::__rw_allocate(unsigned, int) [memory.cpp:53]
>     __rw_tmpbuf    [tmpbuf.cpp:115]
>     std::pair<short*, int > std::get_temporary_buffer<short, int >(int, short*)
[_rawiter.h:138]
>     std::pair<short*, int > std::get_temporary_buffer<short>(int) [_rawiter.h:153]

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