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[core] li_base64_decode mark cold code path

This commit is contained in:
Glenn Strauss 2021-05-04 13:12:16 -04:00
parent 099dc83fbe
commit 5e39c81ff2
1 changed files with 13 additions and 15 deletions
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28
src/base64.c
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@ -56,21 +56,19 @@ static size_t li_base64_decode(unsigned char * const result, const size_t out_le
/* run through the whole string, converting as we go */
for (i = 0; i < in_length; i++) {
unsigned char c = (unsigned char) in[i];
int ch;
if (c == '\0') break;
if (c >= 128) return 0; /* only 7-bit characters allowed */
ch = base64_reverse_table[c];
if (-3 == ch) {
/* pad character; can only come after 2 base64 digits in a group */
if (group < 2) return 0;
break;
} else if (-2 == ch) {
continue; /* skip character */
} else if (ch < 0) {
return 0; /* invalid character, abort */
const int c = ((unsigned char *)in)[i];
const int ch = (c < 128) ? base64_reverse_table[c] : -1;
if (__builtin_expect( (ch < 0), 0)) {
if (-3 == ch) {
/* pad character; can only come after 2 base64 digits in a group */
if (group < 2) return 0;
break;
} else if (-2 == ch) {
continue; /* skip character */
} else {
if (c == '\0') break;
return 0; /* invalid character, abort */
}
}
switch(group) {