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Where is the Go 'make' function's source code located?

Mary-Kate Olsen

Dec 15, 2024 am 08:41 AM

Where is the Go 'make' function's source code located?

Unveiling the Hidden Source Code Location of 'make' in Go

In the enigmatic realm of Go's built-in functions, the enigmatic 'make' stands out as an elusive enigma. Attempts to trace its origins through "code search" proved futile, leaving developers grappling with the uncertainty of its implementation.

Demystifying the Creation Process

Contrary to popular belief, 'make' does not exist as an independent entity in the Go source code. Instead, it undergoes a profound transformation through a series of meticulous stages:

Symbol Substitution: The initial 'make' call is substituted with the symbol 'OMAKExx', where 'xx' represents the specified type (e.g., 'OMAKECAP' for make(chan)).
Symbol Typechecking: The substituted symbol is assigned a type, 'OMAKExxCHAN', ensuring its compatibility with the Go type system.
Code Generation: Ultimately, 'OMAKExxCHAN' is replaced with an appropriate call to a runtime function, 'runtime.makechan64' or 'runtime.makechan', depending on the specific type.

Navigating the Compiler Maze

To uncover the source code for 'make', a methodical approach is essential. Begin by determining the stage at which the transformation occurs, which, in this case, is at the compiler level.

Next, explore the various compiler stages ('gc', 'g', 'l') and diligently search for the definitions of 'OMAKExx', 'OMAKExxCHAN', and the corresponding runtime functions. This painstaking process requires a keen eye and an understanding of the Go compilation process.

Conclusion

As you delve into the intricacies of Go's compiler, you will gradually develop an intuitive grasp of the hidden connections that govern the language. By understanding the transformative journey of 'make', you will be equipped to independently uncover the mysteries that lie within the Go source code.

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