Run script build phase 'Bundle React Native code and images' will be run during every build because it does not specify any outputs. To address this warning, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase. (in target 'GutenbergDemo' from project 'GutenbergDemo')

'syscall' is deprecated: first deprecated in iOS 10.0 - syscall(2) is unsupported; please switch to a supported interface. For SYS_kdebug_trace use kdebug_signpost(). [-Wdeprecated-declarations]

variable 'best_offset' may be uninitialized when used here [-Wconditional-uninitialized]

variable 'sum_left' may be uninitialized when used here [-Wconditional-uninitialized]

variable 'sum_top' may be uninitialized when used here [-Wconditional-uninitialized]

variable 'sum_left' may be uninitialized when used here [-Wconditional-uninitialized]

variable 'sum_top' may be uninitialized when used here [-Wconditional-uninitialized]

variable 'best_offset' may be uninitialized when used here [-Wconditional-uninitialized]

parameter 'base' not found in the function declaration [-Wdocumentation]