Arduino compiler string warnings when Preferences set to None

[palmerr23]

Board

DevkitC ESP32 WROOM

Device Description

DevkitC

Hardware Configuration

N/A

Version

latest master

IDE Name

Arduino

Operating System

Win 11

Flash frequency

80

PSRAM enabled

no

Upload speed

921600

Description

Frederic,

Even when Arduino compiler message Preferences are set to None, messages like the following appear:

warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
screenError("Bad EEPROM read\nFailed factory reset\nAborting", MY_RED, 10, false);

The message itself is not the issue (as it is correct), the problem is that it should not appear when compiler warnings are turned off.

Perhaps a compiler flag is not set correctly in the board file?

It's a minor issue, but it's annoying to have to hunt through all the warnings for an actual error!

BTW: thanks for the Arduino ESP32 implementation, it generally works pretty flawlessly.

Richard

Sketch

void screenError(char * message, uint16_t bgcol, uint16_t onTime, bool logo)

Debug Message

N/A

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[VojtechBartoska]

Hello, can you please retest this on v2.0.3-rc1?

[palmerr23]

Issue is still present in v2.0.3-rc1

[PilnyTomas]

Hi @palmerr23, could you please provide complete sketch with all the #includes and other setup necessary to replicate your issue?

[palmerr23]

void setup() {
badkitty("ABC");
}
void badkitty(char * msg){
}
void loop() {
}
![prefs](https://user-images.githubusercontent.com/14856369/163073937-8d8855b4-7710-4bbe-a002-1681e30ec1df.png)

C:\Users\xyzzy.DESKTOP-J4ESB3N\Documents\arduino\sketch_apr13a\sketch_apr13a.ino: In function 'void setup()':
C:\Users\xyzzy.DESKTOP-J4ESB3N\Documents\arduino\sketch_apr13a\sketch_apr13a.ino:2:11: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
badkitty("ABC");

Arduino 1.8.19 with v2.0.3-rc1

Preferences image attached.