[hackers] [scc] Disable macro expansions in cpp clausules || Roberto E. Vargas Caballero

[git]

commit e21b9b0779b6daa0e082d059ce6a179f4b454bef
Author:     Roberto E. Vargas Caballero <k...@shike2.com>
AuthorDate: Fri Jul 17 22:56:38 2015 +0200
Commit:     Roberto E. Vargas Caballero <k...@shike2.com>
CommitDate: Fri Jul 17 23:14:53 2015 +0200

    Disable macro expansions in cpp clausules
    
    It is mandatory by the standard, and it is needed
    beause in other case you can have recursion problems

diff --git a/cc1/cpp.c b/cc1/cpp.c
index b66c45b..b904e5a 100644
--- a/cc1/cpp.c
+++ b/cc1/cpp.c
@@ -532,6 +532,8 @@ cpp(void)
        if (*input->p != '#')
                return 0;
        ++input->p;
+
+       disexpand = 1;
        lexmode = CPPMODE;
        setnamespace(NS_CPPCLAUSES);
        next();
@@ -544,6 +546,8 @@ cpp(void)
 
        if (yytoken != EOFTOK && !cppoff)
                error("trailing characters after preprocessor directive");
+       disexpand = 0;
        lexmode = CCMODE;
+
        return 1;
 }