[BUG][C] C compiler fails because model includes "set.h" which does not exist.

[AlexanderSchuetz97]

Description

The C Client uses set.h which does not exist.
This causes the compiler to fail because set.h does not exist.
The issue occurs when a model object has a array of enums property that is also unique.

I suppose set.h/set.c should also be next to list.c/list.h so I guess even if the files are simply missing, the include would also be wrong.

openapi-generator version

I have tested with 6.2.1 and 7.0.0. This issue exists with both versions.

OpenAPI declaration file content or url

https://pastebin.com/raw/WvAZ1Rwc

Generation Details

Generation using gradle
Gradlefile (build.gradle.kts):

import org.openapitools.generator.gradle.plugin.tasks.GenerateTask

//Using version 7.0.0 also did not fix anything
plugins {
id("org.openapi.generator") version "6.2.1"
}

tasks.register("genV2C") {
validateSpec.set(false)
generatorName.set("c")
inputSpec.set("$rootDir/schema.json")
outputDir.set("$rootDir/generated/")
}

Then on console run:

./gradlew genV2C

Steps to reproduce

See Generation Details

Related issues/PRs

None to my knowledge

Suggest a fix

Perhaps set.c and set.h is just simply missing by mistake?
I could only guess as to what the actual contents of those files would be.

[wing328]

as a workaround, please use the type mappings option to map set to list

e.g. --type-mappings set=list in the CLI

[wing328]

FYI. I've filed #16730 to map set to list by default in the c client generator.