I tested SER which have beed mofified by me. The SER crahed with DBG_QM_MALLOC on, it report
qm_*: prev. fragm. tail overwritten(c0003433,
abcdefed)[0x814f284:0x814f29c]! this happened in one of my function which called pkg_malloc(). this function is located in the tm module.
But if comment the DBG_QM_MALLOC in the Makefile.defs , then compile SER, it never crashes. Who can tell me what that mean?? Thanks for your help.
Best Regards. Sun Zongjun
Hi Sun Zongjun,
Looks like you discover a bug of yours - you have a buffer overflow (write more than allocated) in the added functions. Only when compiled with DBG_QM_MALLOC, extra checkings to detect such memory bugs are performed.
Best regards, Marian
szj wrote:
I tested SER which have beed mofified by me. The SER crahed with DBG_QM_MALLOC on, it report
qm_*: prev. fragm. tail overwritten(c0003433,
abcdefed)[0x814f284:0x814f29c]! this happened in one of my function which called pkg_malloc(). this function is located in the tm module.
But if comment the DBG_QM_MALLOC in the Makefile.defs , then compile SER, it never crashes. Who can tell me what that mean?? Thanks for your help.
Best Regards. Sun Zongjun
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szj