Develop those things: go plus c.free to free memory, and what are the reasons for compilation errors?

stay EasyGBS During the development and testing of platform functions , We are go Medium plus C.free Free memory , An error message appears in the figure below ：“could not determine kind of name for C.free”（ Compile failed ）.

The following code is plus C.free After the function , Resulting in compilation failure ：

stay EasyGBS In the same project , Other go There are also documents C.free Release memory functions in this way . When compiling the executable , There are no compilation errors .

So here , I immediately thought it might be some C The header file of is not added . Because in go Write in C Program , There will be no error prompt . So this leads to writing errors , But I don't know . Only when it is compiled into an executable program will an error be reported .

In view of the above situation , Compare two go in C The header file , Finally find #include <stdlib.h> References to header files .

cgo in C.free It can be done with #include <stdlib.h> Use it together , Refer to the following ：

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