https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70587
Bug ID: 70587
Summary: 0e1_p+0 should not be parsed as a single pp-number in
C++14 and earlier
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rs2740 at gmail dot com
Target Milestone: ---
p/P followed by +/- is not part of the pp-number production in C++ before
C++17, but GCC includes them anyway. This results in the following code being
erroneously rejected in C++11/14 mode:
long double operator""_p(long double) { return {}; }
auto x = 0e1_p+0; // should be parsed as 0e1_p + 0
// but parsed as a single pp-number instead and rejected
