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Re: [Qemu-trivial] [Qemu-devel] [PATCH 1/4] fix implicit declaration of

From: Stefan Weil
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH 1/4] fix implicit declaration of syscall() in linux-user/mmap.c
Date: Mon, 10 Dec 2012 18:44:40 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20121027 Iceowl/1.0b1 Icedove/3.0.11

Am 10.12.2012 07:59, schrieb John Spencer:
on glibc, this header is getting pulled in automatically via
another header, however on musl we need to include it explicitly.

linux-user/mmap.c:705:9: warning: implicit declaration of function 'syscall'
linux-user/mmap.c:705:9: warning: nested extern declaration of 'syscall'

Signed-off-by: John Spencer<address@hidden>

  linux-user/mmap.c |    1 +
  1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index b412e3f..171b449 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -25,6 +25,7 @@

According to the Linux man-page SYSCALL(2), syscall
is declared in unistd.h. On my Debian Linux with glibc,
this information is correct. Here is the result of grep:

/usr/include/unistd.h:extern long int syscall (long int __sysno, ...) __THROW;

unistd.h is included implicitly via qemu-common.h,
so if you don't get the declaration, there is a buggy
implementation of the header files in musl:

does not match the Linux documentation.

Please report this to the musl developers.

Stefan Weil

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