23 Aug
2018
23 Aug
'18
11:29 p.m.
From: Ron Natalie
The BSD kernel looks as if it requires such a later
compiler (it uses
bit fields which the earlier compilers didn't support).
Umm, minor nit: bit fields were added to/as of 'Typesetter C', which I gather
was intermediate between V6 and V7.
Noel
23 Aug
23 Aug
11:42 p.m.
New subject: C++ / Kernel
Void probably showed up their first as well It was more like modern C
than the V6 compiler.
-----Original Message-----
From: TUHS <tuhs-bounces(a)minnie.tuhs.org> On Behalf Of Noel Chiappa
Sent: Thursday, August 23, 2018 7:30 PM
To: tuhs(a)minnie.tuhs.org
Cc: jnc(a)mercury.lcs.mit.edu
Subject: Re: [TUHS] C++ / Kernel
From: Ron Natalie
The BSD kernel looks as if it requires such a later
compiler (it uses
bit fields which the earlier compilers didn't support).
Umm, minor nit: bit fields were added to/as of 'Typesetter C', which I
gather was intermediate between V6 and V7.
Noel
24 Aug
24 Aug
12:30 a.m.
New subject: C++ / Kernel
Yep. Im pretty sure I remember void being in typesetter C also. IIRC the
differences between that version of Dennis’s compiler and what was included
in 7th Edition was mostly in the libraries ie stdio was first released as
part of the typesetter compiler but it was still a work in progress.
On Thu, Aug 23, 2018 at 7:42 PM <ron(a)ronnatalie.com> wrote:
Void probably showed up their first as well It was
more like modern C
than the V6 compiler.
-----Original Message-----
From: TUHS <tuhs-bounces(a)minnie.tuhs.org> On Behalf Of Noel Chiappa
Sent: Thursday, August 23, 2018 7:30 PM
To: tuhs(a)minnie.tuhs.org
Cc: jnc(a)mercury.lcs.mit.edu
Subject: Re: [TUHS] C++ / Kernel
Sent from a handheld expect more typos than usual
From: Ron Natalie
The BSD kernel looks as if it requires such a
later compiler (it uses
bit fields which the earlier compilers didn't support).
Umm, minor nit: bit fields were added to/as of 'Typesetter C', which I
gather was intermediate between V6 and V7.
Noel
-- 
2:05 a.m.
New subject: C++ / Kernel
In Henry Spencer's v7 sources there is a "struct void" in
cmd/sh/mode.h -- may have to do Bourne's fascination with
Algol68!
Bitfields were available but they were not used in v7 sources.
May be because v7 pcc generated slow code for bitfields access.
[Gosling's emacs used bitfields extensively. I managed to
compile it but it ran extremely slowly on a 5.6Mhz Fortune
box. That was the main reason I didn't switch to emacs. Then
Yost brought along the Rand editor and I used it until it
would no longer compile on *BSDs.]
On Aug 23, 2018, at 5:30 PM, Clem Cole
<clemc(a)ccc.com> wrote:
Yep. Im pretty sure I remember void being in typesetter C also. IIRC the differences
between that version of Dennis’s compiler and what was included in 7th Edition was mostly
in the libraries ie stdio was first released as part of the typesetter compiler but it was
still a work in progress.
On Thu, Aug 23, 2018 at 7:42 PM <ron(a)ronnatalie.com> wrote:
Void probably showed up their first as well It was more like modern C
than the V6 compiler.
-----Original Message-----
From: TUHS <tuhs-bounces(a)minnie.tuhs.org> On Behalf Of Noel Chiappa
Sent: Thursday, August 23, 2018 7:30 PM
To: tuhs(a)minnie.tuhs.org
Cc: jnc(a)mercury.lcs.mit.edu
Subject: Re: [TUHS] C++ / Kernel
From: Ron Natalie
The BSD kernel looks as if it requires such a
later compiler (it uses
bit fields which the earlier compilers didn't support).
Umm, minor nit: bit fields were added to/as of 'Typesetter C', which I
gather was intermediate between V6 and V7.
Noel
--
Sent from a handheld expect more typos than usual
12:21 p.m.
New subject: C++ / Kernel
Yep. Im pretty sure I remember void being in
typesetter C also. IIRC the differences between that version of Dennis’s compiler and
what was included in 7th Edition was mostly in the libraries ie stdio was first released
as part of the typesetter compiler but it was still a work in progress.
My biggest recollection was the beginning of flipping =+ to += (It supported both but
warned you about the former), and fixing the structure elements to not be global.
Lots of odd quirks in the kernel due to early C limitations. PS->integ always has a
fond part of my memory.
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days inactive
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4 comments
4 participants
participants (4)
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Bakul Shah -
Clem Cole -
jnc＠mercury.lcs.mit.edu -
ron＠ronnatalie.com