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fixed offset calculation for escape syntax

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This commit is contained in:
Igor M 2024-03-17 13:15:11 +02:00
parent 6f30327420
commit f8ea125d0f
1 changed files with 6 additions and 1 deletions
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7
src/directive.c
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@ -4,7 +4,11 @@ AsmError push_string(char *buf, char *input, size_t len) {
char chr = input[pos]; char chr = input[pos];
if (chr == '\\') { if (chr == '\\') {
pos += 1; pos += 1;
if (pos + 1 >= len) {
return ErrDanglingEscape;
}
chr = input[pos]; chr = input[pos];
size_t offset = 1;
switch (chr) { switch (chr) {
case '\\': case '\\':
chr = '\\'; chr = '\\';
@ -30,7 +34,7 @@ AsmError push_string(char *buf, char *input, size_t len) {
} }
char high = get_hex(input[pos + 1]); char high = get_hex(input[pos + 1]);
char low = get_hex(input[pos + 2]); char low = get_hex(input[pos + 2]);
pos += 2; offset = 2;
if (high > 15 || low > 15) { if (high > 15 || low > 15) {
return ErrStringBadHex; return ErrStringBadHex;
} }
@ -39,6 +43,7 @@ AsmError push_string(char *buf, char *input, size_t len) {
default: default:
return ErrBadStringEscape; return ErrBadStringEscape;
} }
pos += offset;
} }
buf[ndata] = chr; buf[ndata] = chr;
ndata += 1; ndata += 1;