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lpDx_maybe was a pointer defined to point at either lpDx itself or NULL, depending on whether the code decided it needed to pass the lpDx array of per-character pixel offsets to various functions during drawing (based in turn on whether the font was variable-pitch). lpDx is reallocated as necessary, which means lpDx_maybe must be kept up to date. This was achieved by resetting it to lpDx if it was already non-NULL. But lpDx starts out as NULL before the first reallocation, so that this can't work - it'll be initialised to NULL even if we _did_ want to use it, and then at the first realloc, it won't be updated! Before the previous commit turned lpDx from a static into an automatic variable, this would have been a rare bug affecting only the first call to the function. Now it will happen all the time, which is better, because we can notice and fix it. Replaced lpDx_maybe completely with a boolean flag indicating whether we should pass lpDx to drawing functions.
This is the README for PuTTY, a free Windows and Unix Telnet and SSH
client.
PuTTY is built using CMake <https://cmake.org/>. To compile in the
simplest way (on any of Linux, Windows or Mac), run these commands in
the source directory:
cmake .
cmake --build .
Then, to install in the simplest way on Linux or Mac:
cmake --build . --target install
On Unix, pterm would like to be setuid or setgid, as appropriate, to
permit it to write records of user logins to /var/run/utmp and
/var/log/wtmp. (Of course it will not use this privilege for
anything else, and in particular it will drop all privileges before
starting up complex subsystems like GTK.) The cmake install step
doesn't attempt to add these privileges, so if you want user login
recording to work, you should manually ch{own,grp} and chmod the
pterm binary yourself after installation. If you don't do this,
pterm will still work, but not update the user login databases.
Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory. If you aren't using one of our source snapshots,
you'll need to do this yourself. Halibut can be found at
<https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
The PuTTY home web site is
https://www.chiark.greenend.org.uk/~sgtatham/putty/
If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.
See the file LICENCE for the licence conditions.