Updated D then undefined symbols in vibed

[John Colvin via Digitalmars-d-learn]

On Thursday, 24 November 2016 at 09:52:32 UTC, Jot wrote:
> Using vibe D. designed to update dmd to latest and then I now 
> get the following errors:
>
> .dub\obj\debug\dev\source\app.obj(app)
>  Error 42: Symbol Undefined 
> _D3std6format12arrayPtrDiffFNaNbNiNexAvxAvZi
> .dub\obj\debug\dev\source\app.obj(app)
>  Error 42: Symbol Undefined 
> _D3std5stdio4File17LockingTextWriter7handle_MFNdNeZPS4core4stdc5stdio6_iobuf (@property @trusted core.stdc.stdio._iobuf* std.stdio.File.LockingTextWriter.handle_())
> .dub\obj\debug\dev\source\app.obj(app)
>  Error 42: Symbol Undefined 
> _D3std8datetime7SysTime6toHashMxFNaNbNiNfZk
>
> when I clean the solution I eventually end up with a bunch more 
> errors.
>
> Symbol Undefined 
> _D3std6random109__T21MersenneTwisterEngineTkVki32Vki624Vki397Vki31Vki2567483615Vki11Vki7Vki263691417EDFC9546C199E5D72A199057D68B
>
> Symbol Undefined 
> _D3std5regex8internal6parser7CodeGen8popFixupMFZk (uint 
> std.regex.internal.parser.CodeGen.popFixup())
>
> Symbol Undefined 
> _D3std5regex8internal6parser7CodeGen13genNamedGroupMFAyaZv 
> (void 
> std.regex.internal.parser.CodeGen.genNamedGroup(immutable(char)[]))
>
> Symbol Undefined 
> _D3std5regex8internal6parser7CodeGen6lengthMFNdZk (@property 
> uint std.regex.internal.parser.CodeGen.length())
>
> etc...
>
> Seems like someone decided to screw up a lot of people by 
> removing a lot of stuff ;/ I guess I should learn my lesson 
> about assuming a "stable" dmd release won't completely kill my 
> project.

those are internal symbols, meaning that it's very (like 99% 
certain, unless you or one of your dependencies is manually 
redeclaring those symbols using their mangled names) likely that 
the cause is that something, somewhere, hasn't been cleaned 
properly.