LuaLS / LuaLS/lua-language-server
[Build] Windows ARM64 build failure: undefined symbol __longjmp_wrapper in fast_setjmp_arm64.s
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Descrizione
Description:
When attempting to compile lua-language-server on Windows on Arm using the MSVC toolchain (armasm64), the build fails during the assembly phase of the bee.lua dependency.
The assembler throws an error because the file 3rd/bee.lua/3rd/lua-patch/fast_setjmp_arm64.s attempts to export a symbol that is never defined in the text area, while also failing to export fast_longjmp.
Environment:
OS: Windows 11 (Arm64)
Compiler: MSVC (Host: ARM64, Target: ARM64)
Tool: armasm64.exe
Error Logs:
[1/125] Compile ASM build/obj/source_lua/fast_setjmp_arm64.obj
FAILED: build/obj/source_lua/fast_setjmp_arm64.obj
armasm64 -nologo -o build/obj/source_lua/fast_setjmp_arm64.obj 3rd/bee.lua/3rd/lua-patch/fast_setjmp_arm64.s
C:\Code\Tools\lua-language-server\3rd\bee.lua\3rd\lua-patch\fast_setjmp_arm64.s(40) : error A2023: undefined symbol: __longjmp_wrapper
END
[6/125] Compile C build/obj/source_lua/onelua.obj
C:\Code\Tools\lua-language-server\3rd\bee.lua\3rd\lua55\ldo.c(131): warning C4013: 'fast_longjmp' undefined; assuming extern returning int
C:\Code\Tools\lua-language-server\3rd\bee.lua\3rd\lua55\ldo.c(169): warning C4013: 'fast_setjmp' undefined; assuming extern returning int
[14/125] Compile C++ build/obj/source_bee/error.obj
ninja: build stopped: subcommand failed.
Proposed Workaround / Fix:
I was able to successfully generate the executable by modifying fast_setjmp_arm64.s as follows:
- Removing the EXPORT __longjmp_wrapper line (as it has no corresponding label).
- Adding EXPORT fast_longjmp to ensure the symbol is visible to the C code in ldo.c
Modified Assembly Header:
EXPORT fast_setjmp
EXPORT fast_longjmp ; Added this
; EXPORT __longjmp_wrapper ; Removed this as it caused error A2023: undefined symbol: __longjmp_wrapper
Questions/Concerns:
While this allows the build to complete and the server to run, I am not 100% sure if:
__longjmp_wrapperwas intended to be an alias forfast_longjmpfor compatibility with specific Windows exception handling.- There is a specific reason
fast_longjmpwas omitted from the exports in the original ARM64 patch.
Could the maintainers verify if this is the correct way to align the ARM64 assembly with the Windows MSVC requirements?
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Direzione di ricerca
Ispeziona 3rd/bee.lua/3rd/lua-patch/fast_setjmp_arm64.s insieme a 3rd/bee.lua/3rd/lua55/ldo.c, concentrandoti sui simboli esportati e sui relativi riferimenti Windows ARM64. Esegui la build MSVC armasm64, quindi verifica che la fase di assemblaggio venga completata e che l'eseguibile risultante venga collegato e funzioni senza modificare il comportamento previsto di fast_setjmp o fast_longjmp.
Scritto dal modello di indicizzazione a partire dal testo della issue.
Valutazione
- Stack tecnologico
- c, lua
- Ambito
- build-system, operating-systems
- Tipo di issue
- Bug
- Difficoltà
- 4/5
- Tempo stimato
- 3-5 giorni
- Stato di attività
- Ferma
- Chiarezza
- Abbastanza chiara
- Idoneità per principianti
- 45/100