per1234
commented
2 years ago As you suspected, the issue can be understood more clearly by looking at the C++ code that is generated from the .ino file by the Arduino sketch preprocessor:
$ arduino-cli compile --fqbn arduino:avr:uno --preprocess C:/Users/per/Documents/Arduino/sketch_jun14c
#include <Arduino.h>
#line 1 "C:\\Users\\per\\Documents\\Arduino\\sketch_jun14c\\sketch_jun14c.ino"
#line 1 "C:\\Users\\per\\Documents\\Arduino\\sketch_jun14c\\sketch_jun14c.ino"
void setup();
#line 2 "C:\\Users\\per\\Documents\\Arduino\\sketch_jun14c\\sketch_jun14c.ino"
xvoid loop();
#line 1 "C:\\Users\\per\\Documents\\Arduino\\sketch_jun14c\\sketch_jun14c.ino"
void setup(){}
xvoid loop() {
byte = 2;
}#line directives are used to cause the messages generated from compiling that C++ file to match the line numbering of the source .ino file. This means there are actually two lines of code which are identified as line two:
The generated function prototype:
xvoid loop();and the first line of the function definition:
xvoid loop() {
cmaglie
Describe the problem
When compiling a broken sketch, the CLI might dump the error location multiple times to the std err. It is most likely related to how the sketch files are preprocessed and the prototype is created. (Of course, I am just guessing here š)
To reproduce
sketch_jun14c.ino:sketch_jun14c.ino:sketch_jun14c.ino:Click to see full console output
``` a.kitta@Akoss-MacBook-Pro build % ~/Downloads/arduino-cli version arduino-cli Version: nightly-20220614 Commit: 76fab32 Date: 2022-06-14T08:23:46Z a.kitta@Akoss-MacBook-Pro build % cat ~/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino void setup(){} void loop() { byte = 2; }% a.kitta@Akoss-MacBook-Pro build % ~/Downloads/arduino-cli compile -b arduino:mbed_nano:nanorp2040connect ~/Documents/Arduino/sketch_jun14c /Users/a.kitta/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino: In function 'void loop()': /Users/a.kitta/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino:3:8: error: expected unqualified-id before '=' token byte = 2; ^ Used platform Version Path arduino:mbed_nano 3.1.1 /Users/a.kitta/Library/Arduino15/packages/arduino/hardware/mbed_nano/3.1.1 Error during build: exit status 1 a.kitta@Akoss-MacBook-Pro build % cat ~/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino void setup(){} void 1loop() { byte = 2; }% a.kitta@Akoss-MacBook-Pro build % ~/Downloads/arduino-cli compile -b arduino:mbed_nano:nanorp2040connect ~/Documents/Arduino/sketch_jun14c /Users/a.kitta/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino:2:6: error: expected unqualified-id before numeric constant void 1loop() { ^~~~~ Used platform Version Path arduino:mbed_nano 3.1.1 /Users/a.kitta/Library/Arduino15/packages/arduino/hardware/mbed_nano/3.1.1 Error during build: exit status 1 a.kitta@Akoss-MacBook-Pro build % cat ~/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino void setup(){} xvoid loop() { byte = 2; }% a.kitta@Akoss-MacBook-Pro build % ~/Downloads/arduino-cli compile -b arduino:mbed_nano:nanorp2040connect ~/Documents/Arduino/sketch_jun14c /Users/a.kitta/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino:2:1: error: 'xvoid' does not name a type; did you mean 'void'? xvoid loop() { ^~~~~ void /Users/a.kitta/Documents/Arduino/sketch_jun14c/sketch_jun14c.ino:2:1: error: 'xvoid' does not name a type; did you mean 'void'? xvoid loop() { ^~~~~ void Used platform Version Path arduino:mbed_nano 3.1.1 /Users/a.kitta/Library/Arduino15/packages/arduino/hardware/mbed_nano/3.1.1 Error during build: exit status 1 ```
Expected behavior
I would expect to see the following error once:
Arduino CLI version
arduino-cli Version: nightly-20220614 Commit: 76fab32 Date: 2022-06-14T08:23:46Z
Operating system
macOS
Operating system version
12.3.1
Additional context
No response
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