Fix for bug #77. Thanks for ggn for reporting. :-)

[rmac] / direct.c

diff --git a/direct.c b/direct.c
index c0b5be5cd83ed46279b9d0f7998a28432efe81bc..70f4469602278ad708811706181f5a37146a2c3f 100644 (file)
--- a/direct.c
+++ b/direct.c
@@ -831,9 +831,14 @@ int d_ds(WORD siz)
        if (abs_expr(&eval) != OK)
                return 0;
 
+       // Check to see if the value being passed in is negative (who the hell does
+       // that?--nobody does; it's the code gremlins, or rum, that does it)
+       if (eval < 0)
+               return error("negative sizes not allowed");
+
        // In non-TDB section (BSS, ABS and M6502) just advance the location
        // counter appropriately. In TDB sections, deposit (possibly large) chunks
-       //of zeroed memory....
+       // of zeroed memory....
        if (scattr & SBSS)
        {
                listvalue(eval);