misc: document TESTSUITEFLAGS in README-hacking

[bison.git] / data / c.m4

diff --git a/data/c.m4 b/data/c.m4
index 84713884a589ea9ee6fa8bb15e100ff8ff36f8ca..179743c9f012e674d42bc11c64d822c02831cda8 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -30,7 +30,7 @@ m4_define([b4_tocpp],
 # ------------------
 # A valid C macro name to use as a CPP header guard for FILE.
 m4_define([b4_cpp_guard],
-[b4_tocpp(m4_defn([b4_prefix])/[$1])])
+[[YY_]b4_tocpp(m4_defn([b4_prefix])/[$1])[_INCLUDED]])
 
 
 # b4_cpp_guard_open(FILE)
@@ -202,7 +202,7 @@ m4_define([b4_table_value_equals],
 [m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
                || m4_indir([b4_]$1[_max]) < $3), [1],
        [[0]],
-       [[((]$2[) == (]$3[))]])])
+       [(!!(($2) == ($3)))])])
 
 
 ## ---------##