[Patches] [ python-Patches-1054197 ] fix inplace string concat hash error

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Patches item #1054197, was opened at 2004-10-25 18:22
Message generated for change (Settings changed) made by rhettinger
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Bob Halley (rthalley)
>Assigned to: Raymond Hettinger (rhettinger)
Summary: fix inplace string concat hash error

Initial Comment:
This is a fix for #1054139. 
 
The problem was that the fast path in the new 
higher-performance string concatenation code in ceval.c 
didn't invalide the cached hash value. 
 
My patch makes it set ob_shash to -1, and ob_sstate = 
SSTATE_NOT_INTERNED, just like what would happen if the 
slow path through PyString_Concat(&v, w) was used. 
 
/Bob 
 

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