What the warning?

I have this code IAP_STATUS_CODE software_update_procedure(int8_t const *ap_folder_entry) which calls if (strncasecmp(ap_folder_entry + 8, IMAGES_NAME_EXTENSION, strlen(IMAGES_NAME_EXTENSION...
What the warning?

I have this code IAP_STATUS_CODE software_update_procedure(int8_t const *ap_folder_entry) which calls if (strncasecmp(ap_folder_entry + 8, IMAGES_NAME_EXTENSION, strlen(IMAGES_NAME_EXTENSION...
what is the fairy common way to migration to the Source Insight from KEIL's uVision?

Hi, I'd like to use source insight to edit from keil's uVision. What is the fairy common way to migration to the Source Insight from KEIL's uVision?
what is the fairy common way to migration to the Source Insight from KEIL's uVision?

Hi, I'd like to use source insight to edit from keil's uVision. What is the fairy common way to migration to the Source Insight from KEIL's uVision?
What is the best open source IDE for Arm software developer ?

Beside mbed online compiler and closed source Keil, What is the best open source IDE for Arm software developer ?