gtest下mock类成员函数运行时coredump about emock HOT 4 CLOSED

    void* TrampolineAllocate(const unsigned char* dst, size_t alloc_size)
    {
        FILE* fp = fopen("/proc/self/maps", "r");
        if(!fp) {
            EMOCK_REPORT_FAILURE("Failed to fetch current proc maps");
            return NULL;
        }

        unsigned long last_end = 0;
        while(!feof(fp)) {
            char buf[PATH_MAX + 100] = {0};
            if(fgets(buf, sizeof(buf), fp) == 0)
                break;

            unsigned long begin, end = 0;
            sscanf(buf, "%lx-%lx %*[^\n]", &begin, &end);
            if(last_end && begin != last_end && begin - last_end > alloc_size) {
                // alloc at end of last
                if((size_t)(dst - (unsigned char*)last_end) < kMaxAllocationDelta) {              // 条件不满足
                    if(void* allocated = TrampolineAllocateImpl(dst, alloc_size)) {
                        fclose(fp);
                        return allocated;
                    }
                }
                // alloc at begin of current
                if((size_t)((unsigned char*)begin - dst) < kMaxAllocationDelta) {                  // 条件不满足
                    if(void* allocated = TrampolineAllocateImpl(dst - alloc_size, alloc_size)) {
                        fclose(fp);
                        return allocated;
                    }
                }
            }
            last_end = end;
        }

        fclose(fp);
        return NULL;
    }