[PD-dev] [ pure-data-Bugs-1788587 ] unpackOSC doesn't like typed floats
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Wed Sep 5 18:01:15 CEST 2007
Bugs item #1788587, was opened at 2007-09-05 18:01
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Category: externals
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: IOhannes m zmölnig (zmoelnig)
Assigned to: Martin Peach (mrpeach)
Summary: unpackOSC doesn't like typed floats
Initial Comment:
unpackOSC does not decode an osc-message correctly that contains a floating-point number and typetags.
(see attached patch to trigger the bug)
the problem only occurs if compiled with strict-aliasing enabled (default on gcc>3.0 with optimization levels 2, 3, s), because unpackOSC uses pointer-casts for re-interpreting the data.
for information on this see:
http://mail.opensolaris.org/pipermail/tools-gcc/2005-August/000047.html
one way to prevent this problem is by adding the "-fno-strict-aliasing" to the CFLAGS.
unfortunately, osc comes without build-system so you cannot add this flag...
tested with: pd-0.40.1, pd-0.41test6 (linux x86)
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