LS cannot provide definitions, references. Reports errors for hover

[kittaakos]

The ino file:

void setup() {
    digitalWrite(10, 20);
    digitalPinToPort(10);
    digitalPinToPort(30);
}

void loop() {
    
}

Errors from the log:

root ERROR C/C++: I[13:35:07.966] <-- textDocument/hover(11)
I[13:35:07.966] --> reply:textDocument/hover(11) 0 ms, error: invalid AST
daemon INFO current best: esp32:[email protected] [bundle: false, managed: true, version: 1.0.4]
daemon INFO current best: arduino:[email protected] [bundle: false, managed: true, version: 1.8.6]
discovery INFO Updated discovered boards and available ports. - Discovered boards: [{"name":"Arduino MKR1000","fqbn":"arduino:samd:mkr1000","port":{"address":"/dev/cu.usbmodem14601","protocol":"serial"}}] and available ports: [{"protocol":"serial","address":"/dev/cu.usbmodem14601"},{"protocol":"serial","address":"/dev/cu.usbserial-0001"},{"protocol":"serial","address":"/dev/cu.Bluetooth-Incoming-Port"},{"protocol":"serial","address":"/dev/cu.MALS"},{"protocol":"serial","address":"/dev/cu.SOC"}]
root INFO Attached boards and available ports changed:  {"oldState":{"boards":[],"ports":[]},"newState":{"boards":[{"name":"Arduino MKR1000","fqbn":"arduino:samd:mkr1000","port":{"address":"/dev/cu.usbmodem14601","protocol":"serial"}}],"ports":[{"protocol":"serial","address":"/dev/cu.usbmodem14601"},{"protocol":"serial","address":"/dev/cu.usbserial-0001"},{"protocol":"serial","address":"/dev/cu.Bluetooth-Incoming-Port"},{"protocol":"serial","address":"/dev/cu.MALS"},{"protocol":"serial","address":"/dev/cu.SOC"}]}}
daemon INFO current best: esp32:[email protected] [bundle: false, managed: true, version: 1.0.4]
daemon INFO current best: arduino:[email protected] [bundle: false, managed: true, version: 1.8.6]
root ERROR C/C++: I[13:35:11.675] <-- textDocument/definition(12)
I[13:35:11.675] --> reply:textDocument/definition(12) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:11.826] <-- textDocument/hover(13)
I[13:35:11.826] --> reply:textDocument/hover(13) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:12.165] <-- textDocument/hover(14)
root ERROR C/C++: I[13:35:12.165] --> reply:textDocument/hover(14) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:12.469] <-- textDocument/hover(15)
root ERROR C/C++: I[13:35:12.469] --> reply:textDocument/hover(15) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:12.600] <-- textDocument/definition(16)
root ERROR C/C++: I[13:35:12.600] --> reply:textDocument/definition(16) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:12.742] <-- textDocument/definition(17)
root ERROR C/C++: I[13:35:12.742] --> reply:textDocument/definition(17) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:12.893] <-- textDocument/hover(18)
I[13:35:12.893] --> reply:textDocument/hover(18) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:13.193] <-- textDocument/hover(19)
root ERROR C/C++: I[13:35:13.193] --> reply:textDocument/hover(19) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:13.219] <-- textDocument/definition(20)
root ERROR C/C++: I[13:35:13.219] --> reply:textDocument/definition(20) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:13.494] <-- textDocument/hover(21)
root ERROR C/C++: I[13:35:13.494] --> reply:textDocument/hover(21) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:13.828] <-- textDocument/hover(22)
root ERROR C/C++: I[13:35:13.828] --> reply:textDocument/hover(22) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:13.904] <-- textDocument/definition(23)
root ERROR C/C++: I[13:35:13.904] --> reply:textDocument/definition(23) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:14.032] <-- textDocument/hover(24)
root ERROR C/C++: I[13:35:14.032] --> reply:textDocument/hover(24) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:14.180] <-- textDocument/definition(25)
root ERROR C/C++: I[13:35:14.180] --> reply:textDocument/definition(25) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:16.493] <-- textDocument/hover(26)
root ERROR C/C++: I[13:35:16.493] --> reply:textDocument/hover(26) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:16.503] <-- textDocument/definition(27)
root ERROR C/C++: I[13:35:16.503] --> reply:textDocument/definition(27) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:16.795] <-- textDocument/hover(28)
root ERROR C/C++: I[13:35:16.795] --> reply:textDocument/hover(28) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:17.096] <-- textDocument/hover(29)
root ERROR C/C++: I[13:35:17.096] --> reply:textDocument/hover(29) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:18.004] <-- textDocument/codeAction(30)
root ERROR C/C++: I[13:35:18.004] --> reply:textDocument/codeAction(30) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:18.336] <-- textDocument/didChange
root ERROR C/C++: I[13:35:18.535] <-- textDocument/didChange
root ERROR C/C++: I[13:35:18.551] <-- textDocument/completion(31)
root ERROR C/C++: I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-dac.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-dac.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
root ERROR C/C++: I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/stdlib_noniso.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/stdlib_noniso.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.552] Code complete: 0 results from Sema, 16 from Index, 0 matched, 2 from identifiers, 18 returned (incomplete).
root ERROR C/C++: I[13:35:18.553] --> reply:textDocument/completion(31) 2 ms
root ERROR C/C++: I[13:35:18.629] <-- textDocument/didChange
root ERROR C/C++: I[13:35:18.631] <-- textDocument/completion(32)
root ERROR C/C++: I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
root ERROR C/C++: I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Failed to generate include insertion edits for adding header (FileURI='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h', IncludeHeader='file:///Users/akos.kitta/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/esp32-hal-gpio.h') into /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino: Header not on include path
I[13:35:18.632] Code complete: 0 results from Sema, 12 from Index, 0 matched, 2 from identifiers, 14 returned (incomplete).
root ERROR C/C++: I[13:35:18.632] --> reply:textDocument/completion(32) 1 ms
root ERROR C/C++: I[13:35:18.882] <-- textDocument/codeAction(33)
root ERROR C/C++: I[13:35:18.882] Failed to find compilation database for /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
I[13:35:18.882] Updating file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino with command clangd fallback
[/Users/akos.kitta/Documents/Arduino/sketch_april7a]
/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/bin/clang /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino -fsyntax-only -resource-dir=/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/lib/clang/9.0.0
root ERROR C/C++: E[13:35:18.883] Could not build CompilerInvocation for file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: I[13:35:18.884] --> reply:textDocument/codeAction(33) 2 ms, error: invalid AST
root ERROR C/C++: I[13:35:19.148] <-- textDocument/didSave
I[13:35:19.148] unhandled notification textDocument/didSave
root ERROR C/C++: I[13:35:19.618] <-- textDocument/didChange
root ERROR C/C++: I[13:35:19.880] <-- textDocument/codeAction(34)
root ERROR C/C++: I[13:35:19.880] Failed to find compilation database for /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
I[13:35:19.880] Updating file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino with command clangd fallback
[/Users/akos.kitta/Documents/Arduino/sketch_april7a]
/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/bin/clang /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino -fsyntax-only -resource-dir=/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/lib/clang/9.0.0
root ERROR C/C++: E[13:35:19.881] Could not build CompilerInvocation for file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: I[13:35:19.882] --> reply:textDocument/codeAction(34) 1 ms, error: invalid AST
root ERROR C/C++: I[13:35:20.123] <-- textDocument/didSave
I[13:35:20.123] unhandled notification textDocument/didSave
root ERROR C/C++: I[13:35:20.522] <-- textDocument/didChange
root ERROR C/C++: I[13:35:20.647] <-- textDocument/signatureHelp(35)
root ERROR C/C++: I[13:35:20.647] Failed to find compilation database for /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
I[13:35:20.647] Updating file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino with command clangd fallback
[/Users/akos.kitta/Documents/Arduino/sketch_april7a]
/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/bin/clang /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino -fsyntax-only -resource-dir=/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/lib/clang/9.0.0
root ERROR C/C++: E[13:35:20.648] Could not build CompilerInvocation for file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: E[13:35:20.649] Couldn't create CompilerInvocation
I[13:35:20.649] --> reply:textDocument/signatureHelp(35) 2 ms
root ERROR C/C++: I[13:35:20.651] <-- textDocument/didChange
root ERROR C/C++: I[13:35:20.780] <-- textDocument/signatureHelp(36)
root ERROR C/C++: I[13:35:20.780] Failed to find compilation database for /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
I[13:35:20.780] Updating file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino with command clangd fallback
[/Users/akos.kitta/Documents/Arduino/sketch_april7a]
/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/bin/clang /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino -fsyntax-only -resource-dir=/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/lib/clang/9.0.0
root ERROR C/C++: E[13:35:20.781] Could not build CompilerInvocation for file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: E[13:35:20.781] Couldn't create CompilerInvocation
I[13:35:20.781] --> reply:textDocument/signatureHelp(36) 1 ms
root ERROR C/C++: I[13:35:21.058] <-- textDocument/codeAction(37)
root ERROR C/C++: I[13:35:21.059] --> reply:textDocument/codeAction(37) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:21.157] <-- textDocument/didSave
I[13:35:21.158] unhandled notification textDocument/didSave
root ERROR C/C++: I[13:35:21.470] <-- textDocument/didChange
root ERROR C/C++: I[13:35:21.539] <-- textDocument/didChange
root ERROR C/C++: I[13:35:21.790] <-- textDocument/codeAction(38)
I[13:35:21.790] Failed to find compilation database for /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: I[13:35:21.790] Updating file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino with command clangd fallback
[/Users/akos.kitta/Documents/Arduino/sketch_april7a]
/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/bin/clang /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino -fsyntax-only -resource-dir=/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/lib/clang/9.0.0
root ERROR C/C++: E[13:35:21.791] Could not build CompilerInvocation for file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: I[13:35:21.792] --> reply:textDocument/codeAction(38) 1 ms, error: invalid AST
root ERROR C/C++: I[13:35:22.043] <-- textDocument/didChange
root ERROR C/C++: I[13:35:22.295] <-- textDocument/codeAction(39)
root ERROR C/C++: I[13:35:22.295] Failed to find compilation database for /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
I[13:35:22.295] Updating file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino with command clangd fallback
[/Users/akos.kitta/Documents/Arduino/sketch_april7a]
/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/bin/clang /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino -fsyntax-only -resource-dir=/Users/akos.kitta/git/arduino-editor/arduino-ide-extension/build/lib/clang/9.0.0
root ERROR C/C++: E[13:35:22.296] Could not build CompilerInvocation for file /Users/akos.kitta/Documents/Arduino/sketch_april7a/sketch_april7a.ino
root ERROR C/C++: I[13:35:22.297] --> reply:textDocument/codeAction(39) 1 ms, error: invalid AST
root ERROR C/C++: I[13:35:22.552] <-- textDocument/didSave
I[13:35:22.553] unhandled notification textDocument/didSave
root ERROR C/C++: I[13:35:22.664] <-- textDocument/definition(40)
root ERROR C/C++: I[13:35:22.664] --> reply:textDocument/definition(40) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:22.848] <-- textDocument/definition(41)
root ERROR C/C++: I[13:35:22.848] --> reply:textDocument/definition(41) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:23.206] <-- textDocument/hover(42)
root ERROR C/C++: I[13:35:23.206] --> reply:textDocument/hover(42) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:23.597] <-- textDocument/definition(43)
root ERROR C/C++: I[13:35:23.597] --> reply:textDocument/definition(43) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:23.844] <-- textDocument/documentHighlight(44)
I[13:35:23.844] --> reply:textDocument/documentHighlight(44) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:23.851] <-- textDocument/definition(45)
I[13:35:23.851] --> reply:textDocument/definition(45) 0 ms, error: invalid AST
root ERROR C/C++: I[13:35:24.095] <-- textDocument/codeAction(46)
root ERROR C/C++: I[13:35:24.095] --> reply:textDocument/codeAction(46) 0 ms, error: invalid AST

[kittaakos]

It seems if we do not include the VS Code built-in extension for C++ we do not have coloring. If we include it and we have the @theia/cpp extension as a dependency, the LS does not work.

[mink99]

It is the missing configuration file (https://clangd.llvm.org/config.html ) for clangd that creates this behaviour. This file would include the path for the libraries used.
I would recommend the following fix:
When a project is created or saved in a certain location, created or updated a .clangd configuration file is created or updated in that directory, that contains the included library path, the same as the compilation include path.
... you may even create a user configuration file that contains the user library path, but this may interfere with other ide that are using clangd too.

[mink99]

Btw, this would also fix the formatting configuration missing features.....

[quiknick]

Why is this issue still open after 3 years? It is clearly defined as an issue, and understood what the root cause is.