Iterate over an array using C++11 "approach"

cpp_array.cpp

/// cpp_array.cpp
#include <array>
#include <iostream>
#include <stdint.h>

int main(void)
{
    const std::array<std::uint8_t, 10> array_cpp =
        { 0x01, 0x02, 0x03, 0x04, 0x05,
         0x06, 0x07, 0x08, 0x09, 0x0A };

    // range-based for loop
    for (const auto& s: array_cpp) {
        std::cout << unsigned(s) << '\n';
    }

    return 0;
}

/**
 * Result:
 * Toolchain: arm-none-eabi-g++ (GNU Tools for ARM Embedded Processors 6-2017-q2-update) 6.3.1 20170215
 * Compile: arm-none-eabi-g++ -S cpp_array.cpp -mthumb -mcpu=cortex-m4 -O3 -std=c++11 -fno-exceptions
 */

	.cpu cortex-m4
	.eabi_attribute 20, 1
	.eabi_attribute 21, 1
	.eabi_attribute 23, 3
	.eabi_attribute 24, 1
	.eabi_attribute 25, 1
	.eabi_attribute 26, 1
	.eabi_attribute 30, 2
	.eabi_attribute 34, 1
	.eabi_attribute 18, 4
	.file	"cpp_array.cpp"
	.section	.text.startup,"ax",%progbits
	.align	1
	.p2align 2,,3
	.global	main
	.syntax unified
	.thumb
	.thumb_func
	.fpu softvfp
	.type	main, %function
main:
	@ args = 0, pretend = 0, frame = 16
	@ frame_needed = 0, uses_anonymous_args = 0
	push	{r4, r5, r6, r7, lr}
	ldr		r3, .L6
	ldr		r7, .L6+4
	ldm		r3, {r0, r1, r2}
	sub		sp, sp, #20
	add		r3, sp, #4
	stmia	r3!, {r0, r1}
	add		r4, sp, #4
	strh	r2, [r3]	@ movhi
	add		r6, sp, #14
	movs	r5, #10
.L2:
	ldrb	r1, [r4], #1	@ zero_extendqisi2
	mov		r0, r7
	bl		_ZNSo9_M_insertImEERSoT_
	movs	r2, #1
	add	r1, sp, #3
	strb	r5, [sp, #3]
	bl		_ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_i
	cmp		r4, r6
	bne		.L2
	movs	r0, #0
	add		sp, sp, #20
	@ sp needed
	pop		{r4, r5, r6, r7, pc}
.L7:
	.align	2
.L6:
	.word	.LANCHOR0
	.word	_ZSt4cout
	.size	main, .-main
	.align	1
	.p2align 2,,3
	.syntax unified
	.thumb
	.thumb_func
	.fpu softvfp
	.type	_GLOBAL__sub_I_main, %function
_GLOBAL__sub_I_main:
	@ args = 0, pretend = 0, frame = 0
	@ frame_needed = 0, uses_anonymous_args = 0
	push	{r4, lr}
	ldr	r4, .L10
	mov	r0, r4
	bl	_ZNSt8ios_base4InitC1Ev
	mov	r0, r4
	ldr	r2, .L10+4
	ldr	r1, .L10+8
	pop	{r4, lr}
	b	__aeabi_atexit
.L11:
	.align	2
.L10:
	.word	.LANCHOR1
	.word	__dso_handle
	.word	_ZNSt8ios_base4InitD1Ev
	.size	_GLOBAL__sub_I_main, .-_GLOBAL__sub_I_main
	.section	.init_array,"aw",%init_array
	.align	2
	.word	_GLOBAL__sub_I_main(target1)
	.section	.rodata
	.align	2
	.set	.LANCHOR0,. + 0
.LC0:
	.byte	1
	.byte	2
	.byte	3
	.byte	4
	.byte	5
	.byte	6
	.byte	7
	.byte	8
	.byte	9
	.byte	10
	.bss
	.align	2
	.set	.LANCHOR1,. + 0
	.type	_ZStL8__ioinit, %object
	.size	_ZStL8__ioinit, 1
_ZStL8__ioinit:
	.space	1
	.hidden	__dso_handle
	.ident	"GCC: (GNU Tools for ARM Embedded Processors 6-2017-q2-update) 6.3.1 20170215 (release) [ARM/embedded-6-branch revision 245512]"