Messages in this thread | | | Date | Fri, 16 Mar 2018 20:12:15 +0000 | From | Al Viro <> | Subject | Re: [PATCH v5 0/2] Remove false-positive VLAs when using max() |
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On Fri, Mar 16, 2018 at 12:27:23PM -0700, Linus Torvalds wrote:
> But it sure isn't "variable" either as far as the standard is > concerned, because the standard doesn't even have that concept (it > uses "variable" for argument numbers and for variables).
Huh? 6.7.5.2p4:
If the size is not present, the array type is an incomplete type. If the size is * instead of being an expression, the array type is a variable length array type of unspecified size, which can only be used in declarations with function prototype scope [footnote]; such arrays are nonetheless complete types. If the size is an integer constant expression and the element type has a known constant size, the array type is not a variable length array type; otherwise, the array type is a variable length array type.
footnote: Thus, * can be used only in function declarations that are not definitions (see 6.7.5.3).
That's C99, straight from N1256.pdf (C99-TC3)...
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