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From: Junio C Hamano <>
To: Jeff King <>
Cc: Johannes Schindelin <>,
	Johannes Schindelin via GitGitGadget <>,
Subject: Re: [PATCH 1/2] pkt-line: fix declaration of `set_packet_header()`
Date: Wed, 15 May 2019 10:42:35 +0900	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <> (Jeff King's message of "Tue, 14 May 2019 10:43:06 -0400")

Jeff King <> writes:

> I do have a slight preference for going the _other_ way. There is no
> need to mark the parameter as const in the definition. It is passed by
> value, so nobody except the function body cares either way. And we have
> many function bodies where value-passed parameters (or local variables!)
> are not marked as const, even though they are only assigned to once.

That would be more like this patch, then?

-- >8 --
Subject: pkt-line: drop 'const'-ness of a param to set_packet_header() 

The fact that the incoming parameter is used as read-only in the
fuction is an implementation detail that the callers should not have
to know, and the prototype defined for the function in pkt-line.h
lacked the "const" for that reason, but apparently some compilers
complain about the parameter type mismatch.

Let's squelch it by removing the "const" that is pointless for a
small function like this, which would not help optimizing compilers
nor reading humans that much.

Noticed-by: Johannes Schindelin <>
Helped-by: Jeff King <>
Signed-off-by: Junio C Hamano <>
 pkt-line.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkt-line.c b/pkt-line.c
index c9ed780d0b..a0e87b1e81 100644
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -119,7 +119,7 @@ void packet_buf_delim(struct strbuf *buf)
 	strbuf_add(buf, "0001", 4);
-void set_packet_header(char *buf, const int size)
+void set_packet_header(char *buf, int size)
 	static char hexchar[] = "0123456789abcdef";

  parent reply	other threads:[~2019-05-15  1:42 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-13 22:43 [PATCH 0/2] pkt-line: fix incorrect function declaration Johannes Schindelin via GitGitGadget
2019-05-13 22:43 ` [PATCH 1/2] pkt-line: fix declaration of `set_packet_header()` Johannes Schindelin via GitGitGadget
2019-05-13 23:24   ` Junio C Hamano
2019-05-14 12:57     ` Johannes Schindelin
2019-05-14 14:43       ` Jeff King
2019-05-14 14:44         ` Jeff King
2019-05-15  1:42         ` Junio C Hamano [this message]
2019-05-15  1:44           ` Jeff King
2019-05-15 10:39           ` Johannes Schindelin
2019-05-16  2:24             ` Junio C Hamano
2019-05-16  3:42               ` Jeff King
2019-05-16  4:28                 ` Junio C Hamano
2019-05-17 18:54               ` Johannes Schindelin
2019-05-13 22:43 ` [PATCH 2/2] parse-options: adjust `parse_opt_unknown_cb()`s declared return type Johannes Schindelin via GitGitGadget
2019-05-13 23:29   ` Junio C Hamano

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