From 76c102e548ee76884c94770e727f2ead6cfa5538 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@gmx.de>
Date: Wed, 3 Oct 2012 18:09:53 +0200
Subject: [PATCH] apply sources patch cc-cpp-c99-comm

When running "?c -p ...", ensure the backend cpp recognizes C++ comments.

2c(1) states that the compilers recognize // comments, and the bare compilers
do.  But if you invoke the compiler with '-p', the backend cpp process
doesn't handle // comments properly unless you also give ?c the undocumented
'-+' option (which it passes through to cpp).
---
 sys/src/cmd/cc/lex.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sys/src/cmd/cc/lex.c b/sys/src/cmd/cc/lex.c
index 2652cb8f8..68a566ba0 100644
--- a/sys/src/cmd/cc/lex.c
+++ b/sys/src/cmd/cc/lex.c
@@ -242,14 +242,12 @@ compile(char *file, char **defs, int ndef)
 			close(fd[1]);
 			av[0] = CPP;
 			i = 1;
+			sprint(opt, "-+");
+			av[i++] = strdup(opt);
 			if(debug['.']){
 				sprint(opt, "-.");
 				av[i++] = strdup(opt);
 			}
-			if(debug['+']) {
-				sprint(opt, "-+");
-				av[i++] = strdup(opt);
-			}
 			for(c = 0; c < ndef; c++) {
 				sprint(opt, "-D%s", defs[c]);
 				av[i++] = strdup(opt);