[libdv-dev] [ libdv-Patches-422417 ] Workaround for gcc error on RedHat 7.1

[<no...@so...>]

Patches item #422417, was updated on 2001-05-08 11:55
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Artur Zaprzala (zybi)
Assigned to: Nobody/Anonymous (nobody)
Summary: Workaround for gcc error on RedHat 7.1

Initial Comment:
After installing RedHat 7.1 and recompiling libdv
suddenly my dv videos started to be a little jerky.
What I discovered was that array
dv_weight_inverse_248_matrix was incorrectly
initialized in libdv/weighting.c. Finally it turned out
to be gcc bug - invalid assembly code was produced that
referenced uninitialized variable.
Changing optimization switch from -O2 to -O1 corrects
this problem.
The other solution is to modify a little expression
"1.0 / (W[x] * W[2*z] / 2);" where the problem arises.

Here is the patch attached.

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