multiple definition of `std::nothrow'

[jfjlaros]

When compiling the following sketch,

#include <ArduinoSTL.h>

void setup() {}
void loop() {}

this error is raised:

arduino-cli compile --fqbn arduino:avr:pro --warnings all --output-dir build \
    --build-property compiler.cpp.extra_flags="-pedantic"
new.cpp.o (symbol from plugin): In function `operator new(unsigned int)':
(.text+0x0): multiple definition of `std::nothrow'
/tmp/arduino-sketch-DAE3E2C59CB46B47AC6BC234B0EB1886/libraries/ArduinoSTL/new_handler.cpp.o (symbol from plugin):(.text+0x0): first defined here
collect2: error: ld returned 1 exit status

Commenting out line 22 of src/new_handler.cpp seems to fix the issue, but this perhaps introduces other problems.

My set up:

• arduino-cli Version: 0.25.1 Commit: 436f0bb9 Date: 2022-07-25T15:01:55Z
• ArduinoSTL version 1.3.3
• arduino:avr core version 1.8.5

This issue can be reproduced in the Wokwi simulator.

[fabianoriccardi]

Same here!

Also #79 presents the same issue.

[POberauer]

downgrading to arduino:avr core version 1.8.3 fixed the issue.

[POberauer]

or as @jfjlaros states, remore / comment line 22 in ../ArduinoSTL/src/new_handler.cpp: const std::nothrow_t std::nothrow = { }; since for arduino core v1.8.5, std::nothrow, is already defined in its ../core/arduino/new.cpp file.

[rw3iss]

Was getting the same exact error. If I open the library file ArduinoSTL/src/new_handler.cpp and comment out line 22: // const std::nothrow_t std::nothrow = { }; It will allow my program to compile.

[quinn-n]

I'm getting the same error. The workaround posted by @rw3iss works.

[crashback-exe]

same error here, fix by @rw3iss worked

[mabsch]

same error, @rw3iss 's workaround worked.

[zhangyonggang316]

you are right ,thanks

[odisseano]

Même erreur ;) Merci @rw3iss

[reymalahay]

hi all,

is there going to be an official fix to this issue? i.e. a fix that does not require downgrading other libraries nor commenting out lines of code.

please advise.

thanks in advance, rey malahay

[mw66]

Was getting the same exact error. If I open the library file ArduinoSTL/src/new_handler.cpp and comment out line 22: // const std::nothrow_t std::nothrow = { }; It will allow my program to compile.

If this is not needed shall we create a PR to delete it, or guarded in some conditional MACRO?

#ifdef xxx
...
#endif

[jfjlaros]

I have created PR #94 to implement the suggestion made in the first post of this issue.