Subj : [$] Maximal min() and max()
To   : All
From : LWN.net
Date : Thu Aug 01 2024 15:30:05

[$] Maximal min() and max()

Date:
Thu, 01 Aug 2024 14:28:31 +0000

Description:
Like many projects written in C, the kernel makes extensive use of the C
preprocessor; indeed, the kernel's use is rather more extensive than most.
The preprocessor famously has a number of sharp edges associated with it.
One might not normally think of increased compilation time as one of them,
though.  It turns out that some changes to a couple of conceptually simple
preprocessor macros  min() and max()  led to some truly
pathological, but hidden, behavior where those macros were used.

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Link to news story:
https://lwn.net/Articles/983965/


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