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Ensure remote daemon unions are always non-zero length

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If the remote daemon args/ret unions ever become zero length
(due to a build / Makefile bug) then bad stuff happens at
runtime. Add a compile time assertion to check for this kind
of problem

* daemon/remote.h: Ensure non-zero length unions
This commit is contained in:
Daniel P. Berrange 2010-08-19 14:32:10 +01:00
parent 48ab20999f
commit 7bdb05ea7c
1 changed files with 4 additions and 0 deletions
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4
daemon/remote.h
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@ -30,18 +30,22 @@
typedef union {
# include "remote_dispatch_args.h"
} dispatch_args;
verify(sizeof(dispatch_args) > 0);
typedef union {
# include "remote_dispatch_ret.h"
} dispatch_ret;
verify(sizeof(dispatch_ret) > 0);
typedef union {
# include "qemu_dispatch_args.h"
} qemu_dispatch_args;
verify(sizeof(qemu_dispatch_args) > 0);
typedef union {
# include "qemu_dispatch_ret.h"
} qemu_dispatch_ret;
verify(sizeof(qemu_dispatch_ret) > 0);