The test suite fails on ARM and PowerPC because the libicalss lexer performs unput(EOF) which is not permitted. On these architectures, this gets interpreted as unput(255), creating an extra token which then causes the parser to return a syntax error.
Instead, the lexer should just ignore EOF and not attempt to unput it. The input stream will remain at EOF and the lexer will return an EOF as the next token as needed.
Ubuntu build failure logs are here (we run the test suite as part of the build): https://launchpad.net/ubuntu/+source/libical/0.48-1ubuntu2/+build/3398815 https://launchpad.net/ubuntu/+source/libical/0.48-1ubuntu2/+build/3398816 https://launchpad.net/ubuntu/+source/libical/0.48-1ubuntu2/+build/3398818
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