Some question about linker dlopen with valgrind

Hi
          On the Android OS,  there is a question about the linker program with vaglrind memcheck;
          The 1st  experiment,  the libc module do call the dlopen function to load some shared object, before the linker  call the pre_init functions (  before transfer the cpu control to the main ), and then the valgrind can  not trace malloc leak;
          The second experiment, the libc module do not call the dlopen function to load some shared object, before the linker  call the pre_init functions (  before transfer the cpu control to the main ), and then the valgrind can  trace malloc leak;

          I want to know why , and how to  make valgrind can trace memory leak, while  the libc module call the dlopen function to load some so, before the linker call the pre-init functions.

          If you want to add some args to trace, Please email me.

          Valgrind version 3.14.
BR Owen

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