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by Mindless2112 3495 days ago
Ah, good point. One more reason for me to hate VLAs. ;)

The negative-length array trick is used in the Linux kernel source code [1]. I expect it's compiled with -Wvla though.

[1] https://github.com/torvalds/linux/blob/v4.5/arch/x86/boot/bo...
2 comments
Sacho 3495 days ago
Looks exactly like the macro Jan Beulich replaced with the one discussed in OP: https://github.com/torvalds/linux/commit/8c87df457cb58fe75b9...
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pjmlp 3495 days ago
They are so good that they became optional in C11[0] and thankfully were not adopted by ANSI C++.

[0] - ISO 9899:2011 Programming Languages - C 6.7.6.2 4

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