[Bug preprocessor/67266] Use of "cpp -P ..." collapses multiple blank lines

[mike at flyn dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67266

--- Comment #2 from W. Michael Petullo <mike at flyn dot org> ---
This does not seem to be the behavior of cpp without the -P flag:

$ cpp
x


x

outputs

# 1 "<stdin>"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 1 "<command-line>" 2
# 1 "<stdin>"
x


x

Here cpp does not collapse the newline.