CheckReturn() must be called before emitting code, otherwise it will always return false for switch statements
Redundant jump instruction added because of that will point right after the end of function's code when if statement is the last one in the given function
This wasn't a problem for VM because bytecode in question was unreachable
JIT compiler tries to generate native code for a bogus jump destination, and this leads to out-of-bounds read from labels array
https://forum.zdoom.org/viewtopic.php?t=67149
The game independent part of the code has been mostly isolated.
# Conflicts:
# src/sound/s_doomsound.cpp
# src/sound/s_sound.cpp
# src/sound/s_sound.h
# Conflicts:
# src/sound/s_sound.cpp
Prohibit returning more values than declared in function
The exception is a void function returning one value, but only for compatibility with old scripts
https://forum.zdoom.org/viewtopic.php?t=66341
It's an optional extension of deprecated keyword:
deprecated("2.4", "use ModernFunction instead") int OldFunction();
deprecated("3.5", "use ModernVariable instead") int OldVariable;
Usage of such members will produce the following report:
Script warning, ":zscript.txt" line 123:
Accessing deprecated function OldFunction - deprecated since 2.4.0, use ModernFunction instead
Script warning, ":zscript.txt" line 456:
Accessing deprecated member variable OldVariable - deprecated since 3.5.0, use ModernVariable instead
# Conflicts:
# src/scripting/zscript/zcc_compile.cpp
For the Doom IWADs the provided font looks almost identical to the characters used on the title patches. So, for any level name that got replaced in some language, it will now check if the retrieved name comes from the default table, and if not, ignore the title patch and print the name with the specified font.
This also required removing the 'en' label from the default table, because with this present, the text would always be picked from 'en' instead of 'default'. Since 'en' and 'default' had the same contents, in any English locale the 'default' table was never hit, so this won't make any difference for the texts being chosen.
Last but not least, wminfo has been made a local variable in G_DoCompleted. There were two places where this was accessed from outside the summary screen or its setup code, and both were incorrect.
# Conflicts:
# src/g_hub.cpp
# src/g_level.cpp
# src/gamedata/g_mapinfo.h
# src/gi.h
# src/p_setup.cpp
# src/stringtable.cpp
# src/stringtable.h
# wadsrc/static/zscript/ui/statscreen/statscreen.zs
# wadsrc_extra/static/iwadinfo.txt
# Conflicts:
# src/gi.h
# wadsrc_extra/static/iwadinfo.txt
The message is always printed for any use of deprecated global variable
If such variable is accessed inside a deprecated function from a core script lump, the message is printed only when verbosity level is set to highest
https://forum.zdoom.org/viewtopic.php?t=64830
# Conflicts:
# src/scripting/backend/codegen.cpp
This also necessitated some character remapping in the console font to move the Windows-1252 extra characters to their proper Unicode code points.
# Conflicts:
# src/CMakeLists.txt
# src/posix/sdl/i_input.cpp
# src/scripting/backend/codegen.cpp
# src/v_font.cpp
# Conflicts:
# src/c_console.cpp
This entered the code path which warned about ambiguous use of variables in action functions and as a result ran afoul of subsequent error checks.
Since ZScript has no global scope resolution operator, this needs to ignore all non-static class symbols and try to look up any of these as global identifiers.
For the varargs functions that used the Type field to validate their parameters, now a hidden additional argument is passed which contains a byte array with the type info for the current call's arguments. Since this is static per call location it can be better prepared once when the code is being compiled instead of being put in a runtime created array for each invocation. Everything else uses the per-function instance of the same data.
The only thing that still needed the type field with a VMValue is the defaults array, so this uses a different struct type now to store its data.
# Conflicts:
# src/v_draw.cpp
Currently used for loading parameters into registers.
For checking parameters of native functions some more work is needed to get the info to the function. Currently it doesn't receive the function descriptor.
The amount of support code for this minor optimization was quite large and this stood in the way of streamlining the VM's calling convention, so it was preferable to remove it before moving on.
