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Setting the $MSYSTEM environment variable and invoking shell scripts
with 'bash -lc' sets up the correct MinGW environment.
See https://www.msys2.org/docs/ci/
With clang 14, __attribute__ ((nosanitize)) stops working with
-fsanitize=undefined,integer
Using the following works (and should be equivalent)
-fsanitize=undefined,unsigned-integer-overflow,implicit-conversion
Add a new configuration flag that controls whether the outdated support
for XPointer locations (ranges and points) is enabled.
--with-xptr-locs # Autotools
LIBXML2_WITH_XPTR_LOCS # CMake
The latest spec for what it essentially an XPath extension seems to be
this working draft from 2002:
https://www.w3.org/TR/xptr-xpointer/
The xpointer() scheme is listed as "being reviewed" in the XPointer
registry since at least 2006. libxml2 seems to be the only modern
software that tries to implement this spec, but the code has many bugs
and quality issues.
The flag defaults to "off" and support for this extensions has to be
requested explicitly. The relevant API functions are deprecated.
* `AM_PATH_PYTHON` is a much more common idiom for building
and installing python modules than writing your own.
* It also makes cross-compiling the python bindings possible.
Previously the `PYTHON_CFLAGS`/`PYTHON_LIBS` would have been
based on the `--build` python and not the `--host` python.
By using `pkg-config`, we can always redirect the python-X.Y.pc.
Bug: https://bugs.gentoo.org/582130
This enables the remaining checks from the "integer" group:
- implicit-unsigned-integer-truncation
- implicit-signed-integer-truncation
- implicit-integer-sign-change
These checks can find all kinds of bugs and only require explicit casts
if integer truncation or sign change is really intended.
Minor fix to xmlStringLenGetNodeList to avoid a pointer overflow
during API test.
Enable pointer-overflow and unsigned-integer-overflow sanitizers in CI
tests. Technically, unsigned integer overflows aren't undefined
behavior, but they typically indicate programming errors. Some hash
functions that really require unsigned integer overflows have already
been annotated.
