subject: build warnings: ... unsigned only in ISO C90

Stephan Bergmann sbergman at
Mon Sep 2 23:49:32 PDT 2013

On 09/02/2013 06:34 PM, Terrence Enger wrote:
> In recent builds there have been several instances of a message
> "warning: this decimal constant is unsigned only in ISO C90".  The
> warnings were abzent from master fetched 2013-08-19, but master fetched
> 2013-08-28 had 873 instances.
> I have looked at a couple of examples.  In each case, an .idl file
> declares a negative value for a member of an enumeration, but the .hdl
> or .hpp file has a 10-digit string representing the same pattern of
> bits.  The lines with the negative numbers in the .idl's have not been
> changed for several years; I assume that something has changed in the
> tooling that generates the .hdl's and .hpp's.
> Is this a concern?  I presume it would make it impossible to build
> with warnings-as-errors.

What compiler are you using (and on what platform)?  Please give a 
specific example of an .idl file and the corresponding .hdl file.


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