With glibc 2.26-5, I get the following error when compiling any Obliv-C code that includes math.h:

/usr/include/bits/mathcalls-helper-functions.h[21:12-28] : syntax error
Parsing errorFatal error: exception Frontc.ParseError("Parse error")

Any idea where this error could come from? Downgrading glibc works as a workaround, and so does
declaring all math.h functions as extern when compiling with Obliv-C, but apart from that I haven't had any success debugging this issue.

For reference, that's my mathcalls-helper-functions.h.