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Posted to dev@stdcxx.apache.org by "Farid Zaripov (JIRA)" <ji...@apache.org> on 2007/10/24 15:04:50 UTC
[jira] Commented: (STDCXX-584) purify reports memory leak from
__rw_vfmtwhat in 18.exception test
[ https://issues.apache.org/jira/browse/STDCXX-584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537315 ]
Farid Zaripov commented on STDCXX-584:
--------------------------------------
Commited thus: http://svn.apache.org/viewvc?rev=587886&view=rev
> purify reports memory leak from __rw_vfmtwhat in 18.exception test
> ------------------------------------------------------------------
>
> Key: STDCXX-584
> URL: https://issues.apache.org/jira/browse/STDCXX-584
> Project: C++ Standard Library
> Issue Type: Improvement
> Components: Tests
> Reporter: Travis Vitek
> Assignee: Travis Vitek
> Priority: Trivial
> Fix For: 4.2.1
>
> Attachments: stdcxx-584.patch
>
>
> The library uses a system of functions for platforms that don't support exceptions. The __rw_throw function calls __rw_vfmtwhat() to get a string describing the exception that has occured. Under some conditions the string is allocated from the heap as an array of characters. Eventually __rw_throw invokes a function via pointer (__rw_throw_proc) that is supposed to process the exception (possibly by throwing a real exception object). Unfortunately the test does not deallocate the string that was allocated by __rw_vfmtwhat().
> Purify: Searching for all memory leaks...
> Memory leaked: 3072 bytes (25.6%); potentially leaked: 0 bytes (0%)
> wLK: 3072 bytes leaked in 12 blocks
> * This memory was allocated from:
> malloc [rtlib.o]
> operator new(unsigned) [libstd15d.so]
> operator new [](unsigned) [libstd15d.so]
> __rw::__rw_vfmtwhat(char*, unsigned, char const*, char*) [exception.cpp:479]
> __rw::__rw_throw(int, ...) [exception.cpp:825]
> test_rw_throw() [18.exception.cpp:527]
> * Block of 256 bytes (12 times); last block at 0x8118de0
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