[cfe-dev] Variable length arrays are not permitted in C++
rene at exactcode.de
Tue Feb 16 03:21:06 PST 2010
starting to play with Clang++ I notices this (building our Open Source ExactImage), currently on x86_64, T2 Linux:
lib/Colorspace.cc:442:22: error: variable length arrays are not permitted in C++
the code is straight forward variable length array, like:
const int vmax = 1 << bps;
The error already indicates it is intentionally disabled in clang++ for C++
Even old (3.x?) versions of G++ happily accept this.
Is there an std=c99 like option to allow this in Clang++? Maybe it should accept it by default and warn that it is not portable, GNU extension (but I think present in C++0x)?
René Rebe, ExactCODE GmbH, Jaegerstr. 67, DE-10117 Berlin
http://exactcode.com | http://t2-project.org | http://rene.rebe.name
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