I have update the IDE to the version V5.38.0.0, ARM Compiler: V6.19.I compiled a program that i know that not have warnings with the last version, but with this one give me this warning:warning mixing declarations and code is incompatible iwth standards before C99I dont know why i am getting me this warning becasuse of the C / C++ version that i use are upper than it.Compile Options:Language C: c11Language C++: c++11Optimization: -O0Warning: All WarningsOne ELF Section per FunctionShort enums/wchar
See:
ArmClang: Error: unsupported option '--C99'
https://developer.arm.com/documentation/ka005527/latest
Good morning, rkopschThanks for you answer but i already use this option.-xc -std=c11 --target=arm-arm-none-eabi -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -c-fno-rtti -funsigned-char -fshort-enums -fshort-wcharThe compiler version I used before was version 6.15.