| Issue |
135048
|
| Summary |
[libc++] `<regex>`: `\00` should be rejected
|
| Labels |
libc++
|
| Assignees |
|
| Reporter |
Alcaro
|
```c++
#include <regex>
#include <stdio.h>
int main() {
try {
std::regex r{"\\00"};
puts("valid");
} catch (const std::exception& e) {
printf("not valid: %s\n", e.what());
}
try {
std::regex r{"\\01"};
puts("valid");
} catch (const std::exception& e) {
printf("not valid: %s\n", e.what());
}
}
```
Expected: Reject them. 00 and 01 do not match DecimalIntegerLiteral in the JS spec, and lookahead can't be a digit either.
Actual: Both are valid. (Can't find what they're actually parsed as, though.)
https://godbolt.org/z/heM1o1aGe (MS-STL is busy fixing it https://github.com/microsoft/STL/pull/5380)
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