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mingw32: specify packing alignment to 1 byte, to override -mms-bitfield

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Ex: G_STRUCT_OFFSET(SpiceLinkReply, num_channel_caps) is 172 bytes
when compiled with -mms-bitfield, and 170 bytes without.

GLib/Gtk are compiled with -mms-bitfield, and it is necessary to
compile with the same option for compatibility. The pack pragma
for MINGW32 corrects the structure alignement.

We could use the pack pragma for GNUC unconditionally, that could help
to ensure struct binary compatibility between different compiled
flavours.
This commit is contained in:
Marc-André Lureau 2010-12-29 14:23:59 +01:00 committed by Marc-André Lureau
parent c3822ca59b
commit 45f954aadb
2 changed files with 5 additions and 3 deletions
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4
spice/end-packed.h
View File

@ -33,8 +33,6 @@
#undef SPICE_ATTR_PACKED
#ifndef __GNUC__
#if defined(__MINGW32__) || !defined(__GNUC__)
#pragma pack(pop)
#endif

4
spice/start-packed.h
View File

@ -49,6 +49,10 @@
#define SPICE_ATTR_PACKED __attribute__ ((__packed__))
#ifdef __MINGW32__
#pragma pack(push,1)
#endif
#else
#pragma pack(push)