[Scons-users] A bug in an error message?

[Bill Deegan]

Can you reproduce with a small testcase?


On Wed, Jun 20, 2018 at 5:45 PM, Matthew Marinets <
Matthew.Marinets at kardium.com> wrote:

> This one is a string.
>
>
>
> The substitution looks like an issue with the targets, and now that I
> really squint at my code I realize that the list of targets I pass in might
> have nested lists inside of it (i.e. [1, 2, [3, 4], 5]). But I thought
> flattening the target list was handled by the environment’s builder wrapper?
>
>
>
> -Matthew
>
>
>
> *From:* Scons-users <scons-users-bounces at scons.org> *On Behalf Of *Bill
> Deegan
> *Sent:* June 20, 2018 14:40
>
> *To:* SCons users mailing list <scons-users at scons.org>
> *Subject:* Re: [Scons-users] A bug in an error message?
>
>
>
> Are your actions python function actions?
>
>
>
> On Wed, Jun 20, 2018 at 4:13 PM, Matthew Marinets <
> Matthew.Marinets at kardium.com> wrote:
>
> I’m running SCons 3.0.0 with Python 2.6.5, on Windows 10.
>
>
>
> I haven’t looked into SCons 3.0.1 yet, though I suppose the upgrade
> shouldn’t be too difficult.
>
>
>
> -Matthew
>
>
>
> *From:* Scons-users <scons-users-bounces at scons.org> *On Behalf Of *Bill
> Deegan
> *Sent:* June 20, 2018 12:19
> *To:* SCons users mailing list <scons-users at scons.org>
> *Subject:* Re: [Scons-users] A bug in an error message?
>
>
>
> Which version of Python?
>
> Have you tried SCons 3.0.1?
>
>
>
> On Wed, Jun 20, 2018 at 2:58 PM, Matthew Marinets <
> Matthew.Marinets at kardium.com> wrote:
>
> So in my build we have many many custom builders associated with code
> generation. Normally when things go wrong the error messages are difficult
> to understand, but this one stumped me for quite a while until I noticed
> something:
>
>
>
> Error message:
>
> UnicodeDecodeError: 'utf-8' codec can't decode byte 0x83 in position 62:
> invalid start byte:
>
>    File "C:\proj\Branches\Sandbox\multiStim\Canopus\SConstruct", line 332:
>
>                  standardBuild('FirmwareCommon', firmwareRoot +
> '/Common', env.subst('$versionNumber_Firmware'))
>
>    File "C:\proj\Branches\Sandbox\multiStim\Canopus\SConstruct", line 314:
>
>                  SConscript(componentRoot + '/' + scriptName, exports =
> ['env', 'mbenv', 'versionNumber'])
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Script\SConscript.py",
> line 607:
>
>                  return method(*args, **kw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Script\SConscript.py",
> line 544:
>
>                  return _SConscript(self.fs, *files, **subst_kw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Script\SConscript.py",
> line 253:
>
>                   call_stack[-1].globals)
>
>    File "C:\proj\Branches\Sandbox\multiStim\Canopus\Electrical\
> FPGA\Firmware\Common\SConscript", line 236:
>
>                 CMDFLAGS = '/min'))
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Environment.py",
> line 224:
>
>                  return self.method(*nargs, **kwargs)
>
>    File "C:\proj\Branches\Sandbox\multiStim\Tools\Python\KSCons\GenerationTools\PacketGen.py",
> line 131:
>
>                   action = packetGenAction,)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Environment.py",
> line 1965:
>
>                  return bld(self, target, source, **kw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Builder.py", line
> 635:
>
>                  return self._execute(env, target, source,
> OverrideWarner(kw), ekw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Builder.py", line
> 557:
>
>                  _node_errors(self, env, tlist, slist)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Builder.py", line
> 303:
>
>                  msg = "Two environments with different actions were
> specified for the same target: %s\n(action 1: %s)\n(action 2: %s)" %
> (t,t_contents.decode('utf-8'),contents.decode('utf-8'))
>
>
>
> What this error message is *trying* to say is that there are two commands
> to generate the same target. However, the error message displayed at the
> top is “UnicodeDecodeError: 'utf-8' codec can't decode byte 0x83 in
> position 62: invalid start byte:” This is because the intended error
> message isn’t formatted properly, and just ends up throwing its own error
> to mask the original.
>
>
>
> Has anyone else run into this problem? Am I doing something wrong or is
> this a bug?
>
>
>
> Thanks,
>
> -Matthew
>
>
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