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-rw-r--r--unprotbas.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/unprotbas.c b/unprotbas.c
index 2113fa1..2961f1c 100644
--- a/unprotbas.c
+++ b/unprotbas.c
@@ -823,6 +823,7 @@ void parse_args(int argc, char **argv) {
if(keepvars && forcevars) die("-f and -n are mutually exclusive.");
if(readmap && writemap) die("-r and -w are mutually exclusive.");
if(readmap && keepvars) die("-r and -n are mutually exclusive, maybe you want -w?");
+ if(checkonly && (readmap || writemap)) die("-c and -r/-w are mutually exclusive.");
if(protect_code || protect_vars) {
if(checkonly || keepvars || forcevars || readmap || writemap || !keepgarbage)
die("-p, -pc, -pv options can only be combined with -v, -x, -s.");