arr.c

#include <stdio.h>

char a[] = "abc";

int main(void)
{
	printf("%p\n", a);
	return 0;
}

arr.s

	.file	"arr.c"
	.globl	a
	.data
	.type	a, @object
	.size	a, 4
a:
	.string	"abc"
	.section	.rodata
.LC0:
	.string	"%p\n"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movl	$a, %esi
	movl	$.LC0, %edi
	movl	$0, %eax
	call	printf
	movl	$0, %eax
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.ident	"GCC: (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3"
	.section	.note.GNU-stack,"",@progbits

ptr.c

#include <stdio.h>

char *a = "abc";

int main(void)
{
	printf("%p\n", a);
	return 0;
}

ptr.s

	.file	"ptr.c"
	.globl	a
	.section	.rodata
.LC0:
	.string	"abc"
	.data
	.align 8
	.type	a, @object
	.size	a, 8
a:
	.quad	.LC0
	.section	.rodata
.LC1:
	.string	"%p\n"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	a(%rip), %rax
	movq	%rax, %rsi
	movl	$.LC1, %edi
	movl	$0, %eax
	call	printf
	movl	$0, %eax
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.ident	"GCC: (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3"
	.section	.note.GNU-stack,"",@progbits