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overlap in memcpy in sm2_jacobian_point_mul #1879

@smithAchang

Description

@smithAchang

Version: Gmssl3.1.1
Issue:

  • sm2_jacobian_point_mul函数中调用sm2_jacobian_point_dbl(Q, Q)传参是否存在手误?会导致内存memcpy重叠拷贝问题?
  • 如果需要重叠拷贝,可以考虑使用memmove接口进行替代,以避免valgrind工具检查问题

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