Add new cmdline option -checkaction=<D|C|halt>

driver/cl_options.cpp

@@ -368,6 +368,18 @@ static cl::opt<MultiSetter, true, FlagParser<bool>>
     contracts("contracts", cl::ZeroOrMore, cl::location(ContractsSetter),
               cl::desc("(*) Enable function pre- and post-conditions"));
 
+static cl::opt<CHECKACTION, true> checkAction(
+    "checkaction", cl::ZeroOrMore, cl::location(global.params.checkAction),
+    cl::desc("Action to take when an assert/boundscheck/final-switch fails"),
+    cl::init(CHECKACTION_D),
+    clEnumValues(
+        clEnumValN(CHECKACTION_D, "D",
+                   "Throw an unrecoverable Error (default)"),
+        clEnumValN(CHECKACTION_C, "C",
+                   "Call the C runtime library assert failure function"),
+        clEnumValN(CHECKACTION_halt, "halt",
+                   "Execute a halt instruction, terminating the program")));
+
 CHECKENABLE invReleaseMode = CHECKENABLEon;
 static MultiSetter ReleaseSetter(true, &invReleaseMode,
                                  &global.params.useInvariants,

driver/ldmd.cpp

@@ -163,6 +163,7 @@ Where:\n\
   -boundscheck=[on|safeonly|off]   bounds checks on, in @safe only, or off\n\
   -c               do not link\n\
   -check=[assert|bounds|in|invariant|out|switch][=[on|off]]  Enable or disable specific checks\n\
+  -checkaction=D|C|halt  behavior on assert/boundscheck/finalswitch failure\n\
   -color           turn colored console output on\n\
   -color=[on|off]  force colored console output on or off\n\
   -conf=<filename> use config file at filename\n\
@@ -418,7 +419,10 @@ void translateArgs(size_t originalArgc, char **originalArgv,
                      check(6, "switch", "switch-errors"))) {
           goto Lerror;
         }
-      } else if (strncmp(p + 1, "color", 5) == 0) {
+      }
+      /* -checkaction
+       */
+      else if (strncmp(p + 1, "color", 5) == 0) {
         bool color = true;
         // Parse:
         //      -color