Question

I’m trying to match on a line ending with something like:

blocking=12345us

The pattern I tried to match with is:

char *pattern = "blocking=(\\d{1,})us";

I have tried it with only one blackslash just in case but still no luck.

If I change that line to:

char *pattern = "(.*)";

it matches fine…

I also don’t get an error when I compile either pattern with regcomp().

So I’m assuming my regex is wrong, but it works fine in Python and I’m not sure what else to try. I compiling the regex with:

regcomp(&regex,pattern,REG_EXTENDED)

Thanks for any help!

Answer 1

Looking at the documentation for REs supported by regcomp it would appear that \d is not supported – try:

char *pattern = "blocking=([0-9]){1,}us";