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是否可以为自定义msg指定allocator，而其它部分则使用默认的std的allocator，是否有比较好的内存池allocator实现示例？
自定义消息ros_idlc之后都自动生成了xx_struct.hpp。。直接进去手动改应该可以
@466288281 手动改这个方案有点那啥了点