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From f3e59ce7c471d3f0f1f293ecd0ef3e1797ce411f Mon Sep 17 00:00:00 2001
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From: Cole Robinson <crobinso@redhat.com>
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Date: Sat, 31 Aug 2013 18:25:01 -0400
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Subject: [PATCH] qapi-types.py: Fix enum struct sizes on i686
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Unlike other list types, enum wasn't adding any padding, which caused
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a mismatch between the generated struct size and GenericList struct
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size. More details in a678e26cbe89f7a27cbce794c2c2784571ee9d21
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This crashed qemu if calling qmp query-tpm-types for example, which
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upsets libvirt capabilities probing. Reproducer on i686:
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(sleep 5; printf '{"execute":"qmp_capabilities"}\n{"execute":"query-tpm-types"}\n') | ./i386-softmmu/qemu-system-i386 -S -nodefaults -nographic -M none -qmp stdio
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https://bugs.launchpad.net/qemu/+bug/1219207
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Cc: qemu-stable@nongnu.org
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(cherry picked from commit a9d960fb0b1bc104294ab965116a2d53038b4692)
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---
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scripts/qapi-types.py | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
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index 5ee46ea..5d31b06 100644
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--- a/scripts/qapi-types.py
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+++ b/scripts/qapi-types.py
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@@ -51,7 +51,10 @@ def generate_fwd_enum_struct(name, members):
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return mcgen('''
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typedef struct %(name)sList
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{
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- %(name)s value;
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+ union {
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+ %(name)s value;
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+ uint64_t padding;
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+ };
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struct %(name)sList *next;
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} %(name)sList;
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''',
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