Improve error messsage when argument count varies

[ghc-hetmet.git] / ghc / rts / RtsFlags.c

diff --git a/ghc/rts/RtsFlags.c b/ghc/rts/RtsFlags.c
index f086368..25d53da 100644 (file)
--- a/ghc/rts/RtsFlags.c
+++ b/ghc/rts/RtsFlags.c
@@ -190,6 +190,7 @@ void initRtsFlagsDefaults(void)
     RtsFlags.DebugFlags.gran           = rtsFalse;
     RtsFlags.DebugFlags.par            = rtsFalse;
     RtsFlags.DebugFlags.linker         = rtsFalse;
+    RtsFlags.DebugFlags.squeeze                = rtsFalse;
 #endif
 
 #if defined(PROFILING) || defined(PAR)
@@ -431,6 +432,7 @@ usage_text[] = {
 "  -DP  DEBUG: par",
 "  -Dl  DEBUG: linker",
 "  -Dm  DEBUG: stm",
+"  -Dz  DEBUG: stack squezing",
 "",
 #endif /* DEBUG */
 #if defined(SMP)
@@ -726,6 +728,9 @@ error = rtsTrue;
                      case 'm':
                          RtsFlags.DebugFlags.stm = rtsTrue;
                          break;
+                     case 'z':
+                         RtsFlags.DebugFlags.squeeze = rtsTrue;
+                         break;
                      default:
                          bad_option( rts_argv[arg] );
                      }