1.20. ARRAYS
Or use the C99 standard feature [ISO/IEC 9899:TC3 (C C99 standard), (2007)6.7.5/2], and it works like
alloca()(1.7.2 on page 35) internally.
It’s also possible to use garbage collecting libraries for C.
And there are also libraries supporting smart pointers for C++.
1.20.5 Array of pointers to strings
Here is an example for an array of pointers.
Listing 1.232: Get month name#include <stdio.h>
const char* month1[]=
{
"January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"
};
// in 0..11 range
const char* get_month1 (int month)
{
return month1[month];
};
x64
Listing 1.233: Optimizing MSVC 2013 x64_DATA SEGMENT
month1 DQ FLAT:$SG3122
DQ FLAT:$SG3123
DQ FLAT:$SG3124
DQ FLAT:$SG3125
DQ FLAT:$SG3126
DQ FLAT:$SG3127
DQ FLAT:$SG3128
DQ FLAT:$SG3129
DQ FLAT:$SG3130
DQ FLAT:$SG3131
DQ FLAT:$SG3132
DQ FLAT:$SG3133
$SG3122 DB 'January', 00H
$SG3123 DB 'February', 00H
$SG3124 DB 'March', 00H
$SG3125 DB 'April', 00H
$SG3126 DB 'May', 00H
$SG3127 DB 'June', 00H
$SG3128 DB 'July', 00H
$SG3129 DB 'August', 00H
$SG3130 DB 'September', 00H
$SG3156 DB '%s', 0aH, 00H
$SG3131 DB 'October', 00H
$SG3132 DB 'November', 00H
$SG3133 DB 'December', 00H
_DATA ENDS
month$ = 8
get_month1 PROC
movsxd rax, ecx
lea rcx, OFFSET FLAT:month1
mov rax, QWORD PTR [rcx+rax*8]
ret 0
get_month1 ENDP