At least with gcc 6.4, if the first parameter passed to
regex_match() is afterward changed, the second one gets
corrupted. This is avoided by using a temporary string.
static regex const reg2("(.*)(\\{%suffix%\\[\\[)([^\\]]+)(\\]\\]\\})(.*)");
static regex const reg3("(.*)(\\{%prefix%\\[\\[)([^\\]]+)(\\]\\]\\})(.*)");
smatch sub;
static regex const reg2("(.*)(\\{%suffix%\\[\\[)([^\\]]+)(\\]\\]\\})(.*)");
static regex const reg3("(.*)(\\{%prefix%\\[\\[)([^\\]]+)(\\]\\]\\})(.*)");
smatch sub;
+ // Changing the first parameter of regex_match() may corrupt the
+ // second one. In this case we use the temporary string tmp.
if (regex_match(scheme, sub, reg1)) {
res = sub.str(1);
if (!prename.empty())
if (regex_match(scheme, sub, reg1)) {
res = sub.str(1);
if (!prename.empty())
res += sub.str(5);
}
if (regex_match(res, sub, reg2)) {
res += sub.str(5);
}
if (regex_match(res, sub, reg2)) {
+ string tmp = sub.str(1);
- res += sub.str(3);
- res += sub.str(5);
+ tmp += sub.str(3);
+ res = tmp + sub.str(5);
}
if (regex_match(res, sub, reg3)) {
}
if (regex_match(res, sub, reg3)) {
+ string tmp = sub.str(1);
- res += sub.str(3);
- res += sub.str(5);
+ tmp += sub.str(3);
+ res = tmp + sub.str(5);
}
docstring result = from_ascii(res);
result = subst(result, from_ascii("%prename%"), prename);
}
docstring result = from_ascii(res);
result = subst(result, from_ascii("%prename%"), prename);