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Re: [Tinycc-devel] Include path bug (Was: Re: plans to 0.9.27)

From: Steffen Nurpmeso
Subject: Re: [Tinycc-devel] Include path bug (Was: Re: plans to 0.9.27)
Date: Fri, 13 Oct 2017 22:03:37 +0200
User-agent: s-nail v14.9.4-12-g3a6ba889

grischka <address@hidden> wrote:
 |Steffen Nurpmeso wrote:
 |> mildly.  I guess the right thing to do would be to strip all paths
 |> which are also in the system array from the user paths present in
 |> the non-standardized $C_INCLUDE_PATH environment variable, even if
 |> that means that this possibly changes the search order desired by
 |> the user anyway.  
 |Not quite.  Really the only thing you can do is to clean up that
 |suspicions system path cruft from the C_INCLUDE_PATH on YOUR OWN

I see no reason to start screaming.  If that would have been the
first reply of yours i would have looked around earlier for sure.
I think it was clear that i have no idea of compiler internals.

 |    - /usr/local/include
 |    - /usr/include
 |Search order is fixed by conventions, and the built-in system
 |paths have least priority.
 |This implies that it is the compiler's business to set them and
 |that at the same time the user is allowed to override them, even
 |if then the compiler stops to work at all.
 |Therefor your C_INCLUDE_PATH cannot work for tinycc.
 |(The public version of tinycc that is, and as long as it needs
 |its own stdarg.h / does not have __builtin_va_stuff)

I have recreated my patch locally, because i need tcc for working.
I do not know whether gcc and pcc create __builtin sauce in code,
but they do the right thing here, regardless of my C_INCLUDE_PATH.
gcc does not read its own stdarg.h, therefore i would assume it.
tcc also works like this on GNU LibC systems, by the way.

But hey, the bug has been reported, a simple-minded patch has been
rejected, i am eagerly awaiting a true fix.

Ciao.  And have a nice weekend, of course.

|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)

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