Remove dead code and deprecated syntax

src/constfold.d

@@ -57,7 +57,6 @@ extern (C++) int isConst(Expression e)
         return 0;
     }
     assert(0);
-    return 0;
 }
 
 /* =============================== constFold() ============================== */
@@ -1599,7 +1598,6 @@ extern (C++) void sliceAssignArrayLiteralFromString(ArrayLiteralExp existingAE,
             break;
         default:
             assert(0);
-            break;
         }
         (*existingAE.elements)[j + firstIndex] = new IntegerExp(newval.loc, val, elemType);
     }
@@ -1627,7 +1625,6 @@ extern (C++) void sliceAssignStringFromArrayLiteral(StringExp existingSE, ArrayL
             break;
         default:
             assert(0);
-            break;
         }
     }
 }
@@ -1679,7 +1676,6 @@ extern (C++) int sliceCmpStringWithArray(StringExp se1, ArrayLiteralExp ae2, siz
             break;
         default:
             assert(0);
-            break;
         }
         int c = val1 - val2;
         if (c)

src/ctfeexpr.d

@@ -241,7 +241,6 @@ public:
             return cast(char*)"<goto>";
         default:
             assert(0);
-            return null;
         }
     }
 
@@ -458,7 +457,6 @@ extern (C++) UnionExp copyLiteral(Expression e)
     }
     e.error("CTFE internal error: literal %s", e.toChars());
     assert(0);
-    return ue;
 }
 
 /* Deal with type painting.
@@ -572,7 +570,6 @@ extern (C++) uinteger_t resolveArrayLength(Expression e)
         return ale.keys.dim;
     }
     assert(0);
-    return 0;
 }
 
 /******************************
@@ -648,7 +645,6 @@ extern (C++) TypeAArray toBuiltinAAType(Type t)
     if (t.ty == Taarray)
         return cast(TypeAArray)t;
     assert(0);
-    return null;
 }
 
 /************** TypeInfo operations ************************************/
@@ -1019,7 +1015,6 @@ extern (C++) void intUnary(TOK op, IntegerExp e)
         break;
     default:
         assert(0);
-        break;
     }
 }
 
@@ -1666,7 +1661,6 @@ extern (C++) int ctfeRawCmp(Loc loc, Expression e1, Expression e2)
     }
     error(loc, "CTFE internal error: bad compare");
     assert(0);
-    return 0;
 }
 
 /// Evaluate ==, !=.  Resolves slices before comparing. Returns 0 or 1

src/declaration.d

@@ -436,7 +436,6 @@ public:
     Dsymbol syntaxCopy(Dsymbol s)
     {
         assert(0);
-        return null;
     }
 
     const(char)* kind()
@@ -2364,7 +2363,6 @@ public:
     final Dsymbol syntaxCopy(Dsymbol s)
     {
         assert(0); // should never be produced by syntax
-        return null;
     }
 
     final void semantic(Scope* sc)
@@ -2808,7 +2806,6 @@ public:
     Dsymbol syntaxCopy(Dsymbol s)
     {
         assert(0); // should never be produced by syntax
-        return null;
     }
 
     ThisDeclaration isThisDeclaration()

src/dinterpret.d

@@ -2228,7 +2228,6 @@ public:
                         // var should have been initialized when it was created
                         error(loc, "CTFE internal error: trying to access uninitialized var");
                         assert(0);
-                        return CTFEExp.cantexp;
                     }
                     e = v._init.toExpression();
                 }
@@ -3227,7 +3226,6 @@ public:
         default:
             printf("be = '%s' %s at [%s]\n", Token.toChars(e.op), e.toChars(), e.loc.toChars());
             assert(0);
-            return;
         }
     }
 
@@ -3768,7 +3766,6 @@ public:
                     break;
                 default:
                     assert(0);
-                    break;
                 }
                 return null;
             }
@@ -4034,7 +4031,6 @@ public:
                     break;
                 default:
                     assert(0);
-                    break;
                 }
             }
             if (goal == ctfeNeedNothing)
@@ -4294,7 +4290,6 @@ public:
             return;
         default:
             assert(0);
-            return;
         }
     }
 
@@ -4362,7 +4357,7 @@ public:
         case TOKlt:
             return TOKge;
         default:
-            return assert(0), TOKreserved;
+            assert(0);
         }
     }
 
@@ -5082,7 +5077,6 @@ public:
                 if (goal == ctfeNeedLvalue && e1.type.ty == Taarray && e.modifiable)
                 {
                     assert(0); // does not reach here?
-                    return;
                 }
                 e.error("cannot index null array %s", e.e1.toChars());
                 result = CTFEExp.cantexp;
@@ -5863,13 +5857,11 @@ public:
     {
         e.error("CTFE internal error: trying to read uninitialized variable");
         assert(0);
-        result = CTFEExp.cantexp;
     }
 
     void visit(ThrownExceptionExp e)
     {
         assert(0); // This should never be interpreted
-        result = e;
     }
 }
 
@@ -6576,7 +6568,6 @@ extern (C++) Expression evaluatePostblit(InterState* istate, Expression e)
         return null;
     }
     assert(0);
-    return null;
 }
 
 extern (C++) Expression evaluateDtor(InterState* istate, Expression e)

src/dmangle.d

@@ -419,7 +419,6 @@ public:
             default:
                 fprintf(stderr, "'%s', linkage = %d\n", d.toChars(), d.linkage);
                 assert(0);
-                return;
             }
         }
         buf.writestring("_D");

src/dscope.d

@@ -522,7 +522,6 @@ struct Scope
             }
         }
         assert(0);
-        return null;
     }
 
     /********************************************

src/dsymbol.d

@@ -817,7 +817,6 @@ public:
         print();
         printf("%s %s\n", kind(), toChars());
         assert(0);
-        return null;
     }
 
     /**************************************

src/dtemplate.d

@@ -1688,7 +1688,7 @@ public:
                 default:
                     goto Lnomatch;
                 }
-                ++argi;
+                assert(0);
             }
             //printf("-> argi = %d, nfargs = %d, nfargs2 = %d\n", argi, nfargs, nfargs2);
             if (argi != nfargs2 && !fvarargs)
@@ -2976,7 +2976,6 @@ extern (C++) MATCH deduceTypeHelper(Type t, Type* at, Type tparam)
         return MATCHnomatch;
     default:
         assert(0);
-        return MATCHnomatch; // silence compiler warning about missing return
     }
 }
 
@@ -3364,8 +3363,6 @@ extern (C++) MATCH deduceType(RootObject o, Scope* sc, Type tparam, TemplatePara
                 }
             }
             visit(cast(Type)t);
-            return;
-            result = MATCHnomatch;
         }
 
         void visit(TypeAArray t)

src/expression.d

@@ -4415,7 +4415,6 @@ public:
             break;
         default:
             assert(0);
-            break;
         }
         return value;
     }

src/hdrgen.d

@@ -1194,7 +1194,6 @@ public:
             break;
         default:
             assert(0);
-            break;
         }
         buf.writestring("extern (");
         buf.writestring(p);
@@ -3062,7 +3061,6 @@ extern (C++) const(char)* trustToChars(TRUST trust)
     default:
         assert(0);
     }
-    return null; // never reached
 }
 
 extern (C++) void linkageToBuffer(OutBuffer* buf, LINK linkage)
@@ -3097,7 +3095,6 @@ extern (C++) const(char)* linkageToChars(LINK linkage)
     default:
         assert(0);
     }
-    return null; // never reached
 }
 
 extern (C++) void protectionToBuffer(OutBuffer* buf, Prot prot)
@@ -3134,7 +3131,6 @@ extern (C++) const(char)* protectionToChars(PROTKIND kind)
     default:
         assert(0);
     }
-    return null; // never reached
 }
 
 // Print the full function signature with correct ident, attributes and template args

src/lexer.d

@@ -1861,7 +1861,7 @@ public:
         alias FLAGS_decimal = FLAGS.FLAGS_decimal;
         alias FLAGS_unsigned = FLAGS.FLAGS_unsigned;
         alias FLAGS_long = FLAGS.FLAGS_long;
-        ;
+
         FLAGS flags = (base == 10) ? FLAGS_decimal : FLAGS_none;
         // Parse trailing 'u', 'U', 'l' or 'L' in any combination
         const(char)* psuffix = p;

src/mtype.d

@@ -598,7 +598,6 @@ public:
     const(char)* kind()
     {
         assert(false); // should be overridden
-        return null;
     }
 
     final Type copy()
@@ -613,7 +612,6 @@ public:
         print();
         fprintf(stderr, "ty = %d\n", ty);
         assert(0);
-        return this;
     }
 
     bool equals(RootObject o)
@@ -3416,7 +3414,6 @@ public:
             break;
         default:
             assert(0);
-            break;
         }
         //printf("TypeBasic::size() = %d\n", size);
         return size;
@@ -7926,10 +7923,10 @@ public:
             {
                 assert(0); // cannot find a case where this happens; leave
                 // assert in until we do
-                ScopeExp se = cast(ScopeExp)de.e1;
-                s = se.sds.search(e.loc, ident);
-                e = de.e1;
-                goto L1;
+                // ScopeExp se = cast(ScopeExp)de.e1;
+                // s = se.sds.search(e.loc, ident);
+                // e = de.e1;
+                // goto L1;
             }
         }
         s = sym.search(e.loc, ident);

src/objc_stubs.d

@@ -39,21 +39,18 @@ struct ObjcSelector
     {
         printf("Should never be called when D_OBJC is false\n");
         assert(0);
-        return null;
     }
 
     extern (C++) static ObjcSelector* lookup(const(char)* s, size_t len, size_t pcount)
     {
         printf("Should never be called when D_OBJC is false\n");
         assert(0);
-        return null;
     }
 
     extern (C++) static ObjcSelector* create(FuncDeclaration fdecl)
     {
         printf("Should never be called when D_OBJC is false\n");
         assert(0);
-        return null;
     }
 }
 
@@ -104,7 +101,6 @@ extern (C++) bool objc_isUdaSelector(StructDeclaration sd)
 {
     printf("Should never be called when D_OBJC is false\n");
     assert(0);
-    return false;
 }
 
 extern (C++) void objc_FuncDeclaration_semantic_validateSelector(FuncDeclaration fd)

src/parse.d

@@ -2911,7 +2911,6 @@ public:
             break;
         default:
             assert(0);
-            break;
         }
         if (a && token.value == TOKsemicolon)
         {
@@ -3517,7 +3516,6 @@ public:
             assert(0);
         }
         assert(0);
-        return null;
     }
 
     Type parseDeclarator(Type t, int* palt, Identifier* pident, TemplateParameters** tpl = null, StorageClass storageClass = 0, int* pdisable = null, Expressions** pudas = null)
@@ -4477,7 +4475,6 @@ public:
                 goto Ldeclaration;
             else
                 goto Lexp;
-            break;
         case TOKassert:
         case TOKthis:
         case TOKsuper:

src/root/filename.d

@@ -658,7 +658,6 @@ struct FileName
         else
         {
             assert(0);
-            return null;
         }
     }
 

src/root/longdouble.d

@@ -22,13 +22,13 @@ size_t ld_sprint(char* str, int fmt, real x)
         // ((1.5 -> 1 -> 1.0) == 1.5) is false
         // ((1.0 -> 1 -> 1.0) == 1.0) is true
         // see http://en.cppreference.com/w/cpp/io/c/fprintf
-        char sfmt[5] = "%#Lg\0";
+        char[5] sfmt = "%#Lg\0";
         sfmt[3] = cast(char)fmt;
         return sprintf(str, sfmt.ptr, x);
     }
     else
     {
-        char sfmt[4] = "%Lg\0";
+        char[4] sfmt = "%Lg\0";
         sfmt[2] = cast(char)fmt;
         return sprintf(str, sfmt.ptr, x);
     }