Open 6v6gt-duino opened 4 years ago
Hi @6v6gt-duino , thank for reporting! The issue lies in the prototype generator as you noticed. What bothers me is that both functions are already declared before their usage so the prototype generator shouldn't create anything. We'll investigate soon and report back
Here is another link including a discussion of this issue and including additional error/test cases: https://forum.arduino.cc/index.php?topic=718515.0
This topic is now nearly 3 years old. The problem persists in IDE 2.1.1.
We'll investigate soon and report back
A concerned Arduino user ;)
That gives me the opportunity of adding another example which has occurred in the meantime: https://forum.arduino.cc/t/is-the-location-of-a-global-function-important/996378
Yet another one not seen before from: https://forum.arduino.cc/t/iram-attr-questions/1297715 : The initial assessment is that the storage qualifier IRAM_ATTR prevents the identification of second_sharp() as a function and hence no prototype is generated bit this is a guess. Shifting the function definition above setup() apparently works.
#define timepulse D3 // 1 nterrupt every second
volatile int affiche_flag = 0;
volatile int pps_cnt = 0;
void setup() {
attachInterrupt(timepulse, second_sharp, RISING);
}
void IRAM_ATTR second_sharp() { // routine d'interruption toute les secondes exactes
affiche_flag = true; // debloque l'affichage
pps_cnt = 0;
}
void loop() {
if (affiche_flag) {
affiche_flag = false;
Serial.println("tick");
}
}
Describe the problem
In order to make it easier for beginners to get started with writing Arduino sketches, and for the convenience of all users, Arduino CLI automatically generates and adds prototypes for functions defined in a
.ino
file of a sketch.Under certain specific conditions, the function prototype is inserted into the code at a location before the declaration of a custom type referenced in the function signature.
🐛 The sketch compilation fails spuriously.
To reproduce
Setup environment
Demo
🐛 There was a spurious compilation failure of valid code.
By looking at the C++ code generated by the Arduino sketch preprocessor, we can see the cause of the error:
🐛 The spurious compilation failure was caused by Arduino CLI placing the prototype for the
baz
function before the declaration of thebar_t
type.Expected behavior
Generated function prototypes should be inserted after the declarations of types used in the function signature.
Arduino CLI version
Original report
Arduino IDE 1.8.13
Last verified with
c5812eea68afdb0e4e774f4f15ec4a34f0c3100c
Operating system
Operating system version
Additional context
Originally reported at https://forum.arduino.cc/t/weird-g-error-compiling-simple-type-definition/680759
Additional reports
Related
Workaround
Manually add a function prototype at the appropriate location:
Issue checklist