c - lua inside function appears segfault -

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code:

    m_l = lual_newstate();     if(m_l==null)     {         return -1;     }     lual_openlibs(m_l);

i use gdb test code, when runs lual_openlibs(m_l); gdb tell me program received signal sigsegv, segmentation fault. luah_getstr (t=0x7fa950, key=0x7cc2e0) @ ltable.c:458 458 if (ttisstring(gkey(n)) && rawtsvalue(gkey(n)) == key)) don't knwo how fix it. please me out.


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