parsers: avoid pointer aliasing Newer versions of GCC have aggressive pointer alias optimizations that might get fooled by our pointer manipulations. These issues shouldn't be encountered in practice because distutils compiles extensions with -fno-strict-alias but the code was not valid according to the standard.

graphlog: attempt to fix index overrun (issue2912) This bug may be caused by file subgraphs have more than two parents per node. I have no idea if this fix is correct as the graphlog code is mysterious, but it seems to be fine on the available test case.

util: wrap lines with multi-byte characters correctly (issue2943) This re-introduces the unicode conversion what was lost in d320e70442a5 5 years ago and had the comment: To avoid corrupting multi-byte characters in line, we must wrap a Unicode string instead of a bytestring.