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-rw-r--r--unproto/Makefile2
-rw-r--r--unproto/unproto.c3
2 files changed, 4 insertions, 1 deletions
diff --git a/unproto/Makefile b/unproto/Makefile
index a9a8c04..5381719 100644
--- a/unproto/Makefile
+++ b/unproto/Makefile
@@ -38,7 +38,7 @@ SKIP =
# 7. Specify a string constant with exactly three octal digits. If you
# change this definition, you will have to update the example.out file.
#
-BELL = -DBELL=\"007\"
+# BELL = -DBELL=\"007\"
# Some C compilers have problems with "void". The nature of the problems
# depends on the age of the compiler.
diff --git a/unproto/unproto.c b/unproto/unproto.c
index 945e066..9dcdf1a 100644
--- a/unproto/unproto.c
+++ b/unproto/unproto.c
@@ -220,6 +220,9 @@ char **argv;
cpp_pid = pipe_stdin_through_cpp(argv);
#endif
#ifdef REOPEN
+#ifdef PIPE_THROUGH_CPP
+#error Defines REOPEN and PIPE_THROUGH_CPP are incompatible.
+#endif
if ( argc > 1 ) {
if( freopen(argv[1], "r", stdin) == 0 ) {
fprintf(stderr, "Cannot open '%s'\n", argv[1]);