Re: [Qemu-devel] [FreeBSD] Build Failure, qemu-char.c

[Sean Bruno <sbruno@freebsd.org>]

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On 01/22/16 08:47, Peter Maydell wrote:

> This one is just straightforwardly BSD-only code that hasn't been
> compile-tested.
> 
>> qemu-char.c:4265:36: warning: incompatible pointer types passing 
>> 'ChardevCommon *' (aka 'struct ChardevCommon *') to parameter of
>> type 'ChardevBackend *' (aka 'struct ChardevBackend *') 
>> [-Wincompatible-pointer-types] return qemu_chr_open_pp_fd(fd,
>> common, errp); ^~~~~~ qemu-char.c:1838:61: note: passing argument
>> to parameter 'backend' here ChardevBackend *backend,
> 
> This one looks like it ought to build on Linux so you're probably 
> right about it being a clang-only thing. (We do build with clang on
> OSX but I think there the CHARDEV_PARPORT code is not compiled
> in.)
> 
> thanks -- PMM
> 

Yeah, this is smack in the middle of #ifdef (random BSD) here.  It
looks like a simple copy/paste error where "common" should have been
"backend".  Fixes the build failure, but still emits a cast warning.
I think this is the intent of the changes however.

index e133f4f..73eb10f 100644
- --- a/qemu-char.c
+++ b/qemu-char.c
@@ -1840,7 +1840,7 @@ static CharDriverState *qemu_chr_open_pp_fd(int fd,
 {
     CharDriverState *chr;

- -    chr = qemu_chr_alloc(common, errp);
+    chr = qemu_chr_alloc(backend, errp);
     if (!chr) {
         return NULL;
     }
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