This
patch is against the 1_1 branch.
This
patch fixes 2 scanner bugs:
Bug36816 Scanner infinite loop on incomplete
#include
Bug36255 Parser hangs/goes
infinite
This
patch also introduces a new automated test, FractionalAutomatedTest, which
tests the parser on incomplete files. This test behaves in the same
manner as AutomatedTest with regard to a FractionalAutomatedTest.properties
file. In addition to the same properties as Automated test, there are 3
new ones:
stepSize = <integer value> (default is 50)
windowSize = <integer value> (default is 200)
tempFile = <file name> (default is "", no
tempFile)
The
Fractional test works by reading in stepSize bytes at a time from the source
file and parsing that partial file. Once the entire file is loaded by reading
and parsing in stepSize increments, starting at the begining of the file
windowSize chunks of code are removed and the rest of it is parsed. This
window of removed code is then advanced by stepSize increments, parsing each
version of the file, until the window reaches the end of the
file.
If a
tempFile is specified, then before each parse, the code about to be parsed is
saved to that file. This is because the whole idea of the fractional
test is to try to find infinite loops. If an infinite loop is found,
then the tempFile and be looked at to try and determine the
cause.
This
is the first pass, a future version might use a seperate thread to parse the
files so that infinite loops can be detected and the test failed instead of
the test just hanging.
-Andrew
