Is "signal" a reserved identifier in C language?

[Abhayak (Abhaya Karmacharya)]

I dont think signal is a reserved name in c language but my sonarqube is complaining it is. Can someone please explain why I am getting “signal” identifier as an code smell ?

[Geoffray (Geoffray Adde)]

Hello @Abhayak

signal is an identifier declared in the signal.h file.
Does it make sense?

[Abhayak (Abhaya Karmacharya)]

Makes sense. Thanks, Geoffray!