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From "Travis Vitek (JIRA)" <j...@apache.org>
Subject [jira] Created: (STDCXX-584) purify reports memory leak from __rw_vfmtwhat in 18.exception test
Date Wed, 10 Oct 2007 22:37:50 GMT
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


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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