[poky] Weird python/OE issue on parsing

[Richard Purdie]

On Sat, 2015-12-19 at 23:02 +0000, Richard Purdie wrote:
> On Sat, 2015-12-19 at 13:15 +0100, Holger Freyther wrote:
> > Hi,
> > 
> > my build to track master of Poky has started to fail in a very odd
> > way. I can't reproduce it in a
> > local build but something is severely wrong:
> > 
> > ERROR: Error in compiling python function in
> > /home/oebuilds/jenkins/workspace/Yocto
> > -Master/label/OE/poky/meta/conf/distro/include/tclibc-glibc.inc,
> > line
> > -10000000000005:
> > ..
> > OverflowError: Python int too large to convert to C long
> > 
> > 
> > So somehow IN_PYTHON_EOF starts ending up in linenumber and then a
> > bit is subtracted from
> > it. Any idea how I can run into this?
> 
> It certainly seems related to the line numbering changes maybe
> interacting badly with EOF somehow. Is this on a 32 bit system? 

Putting:

+        if "tclibc-glibc" in realfile:
+            bb.warn(str(lineno))

into better_compile() shows up some nasty looking line numbers. I think
we need to better bounds checks on the line numbers and fix some of the
data that is being passed in for functions at EOF.

Cheers,

Richard