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  1. 06 Dec, 2010 1 commit
    • Vladislav Vaintroub's avatar
      Bug#473914: mysql_client_test fail with in debug compilaton on windows x64 · 0eae06c4
      Vladislav Vaintroub authored
       
      Reason: inconsistent compilation, federatedx is compiled without SAFEMALLOC
      flag, while anything else is compiled with SAFEMALLOC.
      
      As a consequence, my_hash_init used inside federatedx initialization does not
      provide correct caller info parameters (file, line) , so they are initialized with 
      whatever is on stack. When info about allocated memory is output in
      COM_DEBUG command, the server crashes trying to output string starting at
      0xcccccccccccccccc.
      
      The fix is to remove SAFEMALLOC  preprocessor flags 
      from every CMakeLists.txt, except the top-level one.
      
      Also, SAFEMALLOC is not defined by default now, instead
      there is WITH_DEBUG_FULL CMake option which adds 
      -DSAFEMALLOC to C and C++ flags in debug compilation. 
      This option is off by  default, because 
      1) Debug C runtime already has heap debugging builtin with 
       overwrite and leak detection
      2)safemalloc considerably slows down the tests.
      
      
      Note also  that 
      - SAFEMALLOC is gone  in MySQL5.5
      - On Windows, heap related overflows can also be found using free pageheap utility
      (that is also part of application verifier). This is even more efficient if there are no other layers 
      on top of Windows heap allocator, e.g  it is most efficient with release version.
      0eae06c4
  2. 15 Sep, 2010 1 commit
  3. 06 Oct, 2009 2 commits
  4. 26 Mar, 2009 1 commit