April 6, 2016
10:51 a.m.
Hi! On Die, 2016-04-05 at 15:29 -0400, Wenda Ni wrote: [...]
I come across the following code in a kernel module code. It defines an array whose length is variant at runtime, depending on the actual inputs. It seems that kernel compiler supports this, which is obvious an error in the standard ANSI C. Do I have the correct understanding on it?
ANSI-C ist old and enforced with -std=c89 with gcc (see manual page). VLAs are allowed since (standard) C99. Bernd -- "What happens when you read some doc and either it doesn't answer your question or is demonstrably wrong? In Linux, you say "Linux sucks" and go read the code. In Windows/Oracle/etc you say "Windows sucks" and start banging your head against the wall." - Denis Vlasenko on lkml