4.7.1. __breakpoint

This intrinsic inserts a BKPT instruction into the instruction stream generated by the compiler. It enables you to include a breakpoint instruction in your C or C++ code.


void __breakpoint(int val)



is a compile-time constant integer whose range is:

0 ... 65535

if you are compiling source as ARM code

0 ... 255

if you are compiling source as Thumb code.


The compiler does not recognize the __breakpoint intrinsic when compiling for a target that does not support the BKPT instruction. The compiler generates either a warning or an error in this case.

The undefined instruction trap is taken if a BKPT instruction is executed on an architecture that does not support it.


void func(void)

See also

  • BKPT in the Assembler Guide.

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