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build: avoid type-punning in vbox

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Commit 78345c68 makes at least gcc 4.1.2 on RHEL 5 complain:

cc1: warnings being treated as errors
In file included from vbox/vbox_V4_0.c:13:
vbox/vbox_tmpl.c: In function 'vboxDomainUndefineFlags':
vbox/vbox_tmpl.c:5298: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

* src/vbox/vbox_tmpl.c (vboxDomainUndefineFlags): Use union to
avoid compiler warning.
This commit is contained in:
Eric Blake 2012-04-19 17:19:32 -06:00 committed by Cole Robinson
parent e3f725a171
commit 834bb44834
1 changed files with 5 additions and 2 deletions
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7
src/vbox/vbox_tmpl.c
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@ -5294,8 +5294,11 @@ vboxDomainUndefineFlags(virDomainPtr dom, unsigned int flags)
((IMachine_Delete)machine->vtbl->Delete)(machine, &safeArray, &progress); ((IMachine_Delete)machine->vtbl->Delete)(machine, &safeArray, &progress);
# else # else
vboxArray array = VBOX_ARRAY_INITIALIZER; union {
machine->vtbl->Delete(machine, 0, (IMedium**)&array, &progress); vboxArray array;
IMedium *medium;
} u = { .array = VBOX_ARRAY_INITIALIZER };
machine->vtbl->Delete(machine, 0, &u.medium, &progress);
# endif # endif
if (progress != NULL) { if (progress != NULL) {
progress->vtbl->WaitForCompletion(progress, -1); progress->vtbl->WaitForCompletion(progress, -1);