Closed
Description
Board
compiler problem
Device Description
compiler problem
Hardware Configuration
compiler problem
Version
v2.0.4
IDE Name
Arduino, Sloeber
Operating System
%
Flash frequency
compiler problem
PSRAM enabled
no
Upload speed
compiler problem
Description
The sketch below throws the error
E:\WORKSPACE_ARDUINO\ArduinoSketches\sketch_jul21a\sketch_jul21a.ino: In function 'void setup()':
sketch_jul21a:7:26: error: '%s' directive writing up to 19 bytes into a region of size 14 [-Werror=format-overflow=]
sprintf(sStringBuffer, "Acc.X %s", &sStringBuffer[10]);
~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
E:\WORKSPACE_ARDUINO\ArduinoSketches\sketch_jul21a\sketch_jul21a.ino:7:10: note: 'sprintf' output between 7 and 26 bytes into a destination of size 20
sprintf(sStringBuffer, "Acc.X %s", &sStringBuffer[10]);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus.exe: some warnings being treated as errors
exit status 1
'%s' directive writing up to 19 bytes into a region of size 14 [-Werror=format-overflow=]
if compiled with -Wall -Werror=all
For all non ESP32 platforms it compiles without any error! - see https://github.com/ArminJo/Arduino-BlueDisplay/actions/runs/2714739545
Sketch
char sStringBuffer[20];
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
sprintf(&sStringBuffer[10], "123.4567"); // edited: original code was: dtostrf(123.45, 4, 1, &sStringBuffer[10]);
sprintf(sStringBuffer, "Acc.X %s", &sStringBuffer[10]);
Serial.println(sStringBuffer);
}
void loop() {
// put your main code here, to run repeatedly:
}Debug Message
E:\WORKSPACE_ARDUINO\ArduinoSketches\sketch_jul21a\sketch_jul21a.ino: In function 'void setup()':
sketch_jul21a:7:26: error: '%s' directive writing up to 19 bytes into a region of size 14 [-Werror=format-overflow=]
sprintf(sStringBuffer, "Acc.X %s", &sStringBuffer[10]);
~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
E:\WORKSPACE_ARDUINO\ArduinoSketches\sketch_jul21a\sketch_jul21a.ino:7:10: note: 'sprintf' output between 7 and 26 bytes into a destination of size 20
sprintf(sStringBuffer, "Acc.X %s", &sStringBuffer[10]);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus.exe: some warnings being treated as errors
exit status 1
'%s' directive writing up to 19 bytes into a region of size 14 [-Werror=format-overflow=]
### Other Steps to Reproduce
_No response_
### I have checked existing issues, online documentation and the Troubleshooting Guide
- [X] I confirm I have checked existing issues, online documentation and Troubleshooting guide.
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