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\x{N} is a syntax error

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This commit is contained in:
Fabrice Bellard
2025-12-22 15:05:37 +01:00
parent 31ef02b907
commit 7bd1ae2c76
1 changed files with 14 additions and 8 deletions
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22
libregexp.c
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@@ -757,9 +757,21 @@ int lre_parse_escape(const uint8_t **pp, int allow_utf16)
c = '\v';
break;
case 'x':
{
int h0, h1;
h0 = from_hex(*p++);
if (h0 < 0)
return -1;
h1 = from_hex(*p++);
if (h1 < 0)
return -1;
c = (h0 << 4) | h1;
}
break;
case 'u':
{
int h, n, i;
int h, i;
uint32_t c1;
if (*p == '{' && allow_utf16) {
@@ -777,14 +789,8 @@ int lre_parse_escape(const uint8_t **pp, int allow_utf16)
}
p++;
} else {
if (c == 'x') {
n = 2;
} else {
n = 4;
}
c = 0;
for(i = 0; i < n; i++) {
for(i = 0; i < 4; i++) {
h = from_hex(*p++);
if (h < 0) {
return -1;