fixed some compilation warnings for C++

Author: totalspectrum

ast.c

@@ -565,7 +565,7 @@ AstMergeStrings(AST *left, AST *right)
         }
         newLen += AstStringLen(right);
     }
-    char *newBuf = malloc(newLen);
+    char *newBuf = (char *)malloc(newLen);
     char *p = newBuf;
     if (left) {
         p = CopyString(p, left);

backends/asm/optimize_ir.c

@@ -107,15 +107,15 @@ ReplaceOpcode(IR *ir, IROpcode op)
 // NULL if multiple jumps (or none at all)
 static IR *UniqJumpForLabel(IR *lbl) {
     if (lbl->opc != OPC_LABEL) ERROR(NULL,"internal error, UniqJumpForLabel called on wrong opc %d",lbl->opc);
-    struct ir_lbljumps *list = lbl->aux;
+    struct ir_lbljumps *list = (struct ir_lbljumps *)lbl->aux;
     if (list && !list->next) return list->jump;
     else return NULL;
 }
 
 static void AppendLblJump(IR *lbl,IR *jmp) {
     if (lbl->opc != OPC_LABEL) ERROR(NULL,"internal error, AppendLblJump called on wrong opc %d",lbl->opc);
-    struct ir_lbljumps *entry = malloc(sizeof(struct ir_lbljumps));
-    entry->next = lbl->aux;
+    struct ir_lbljumps *entry = (struct ir_lbljumps *)malloc(sizeof(struct ir_lbljumps));
+    entry->next = (struct ir_lbljumps *)lbl->aux;
     entry->jump = jmp;
     lbl->aux = entry;
 }
@@ -1168,7 +1168,7 @@ doIsDeadAfter(IR *instr, Operand *op, int level, IR **stack)
                 // Not sure what this check is for? But moved it out of the check loop
                 continue;
             }
-            for (struct ir_lbljumps *list = ir->aux;list;list=list->next) {
+            for (struct ir_lbljumps *list = (struct ir_lbljumps *)ir->aux;list;list=list->next) {
                 IR *comefrom = list->jump;
                 if (comefrom->addr < instr->addr) {
                     // go back and see if there are any references before the
@@ -1474,7 +1474,7 @@ SafeToReplaceForward(IR *first_ir, Operand *orig, Operand *replace, IRCond sette
                 // however, in the special case that the register is never
                 // actually used again then it's safe
                 bool jumpers_before = false;
-                for(struct ir_lbljumps *list = ir->aux;list;list=list->next) {
+                for(struct ir_lbljumps *list = (struct ir_lbljumps *)ir->aux;list;list=list->next) {
                     if (list->jump->addr < first_ir->addr) {
                         jumpers_before = true;
                     }

backends/asm/outasm.c

@@ -564,7 +564,7 @@ static Operand *DupOperandWithPrefix(Operand *oldOperand, const char *prefix) {
         oldOperand = (Operand *)oldOperand->name;
         needSubreg = true;
     }
-    newName = calloc(1, strlen(prefix)+strlen(oldOperand->name)+1);
+    newName = (char *)calloc(1, strlen(prefix)+strlen(oldOperand->name)+1);
     strcpy(newName, prefix);
     strcat(newName, oldOperand->name);
     if (needSubreg) {
@@ -673,7 +673,7 @@ void ReplaceIRWithInline(IRList *irl, IR *origir, Function *func)
                 // do nothing
             } else {
                 ir->dst = NewCodeLabel();
-                for (struct ir_lbljumps *list=ir->aux;list;list=list->next) {
+                for (struct ir_lbljumps *list=(struct ir_lbljumps *)ir->aux;list;list=list->next) {
                     ReplaceJumpTarget(list->jump, ir->dst);
                 }
                 // we used to print an error when there were no jumps, but in fact it is legal

frontends/basic/basiclang.c

@@ -936,7 +936,7 @@ doBasicTransform(AST **astptr, bool transformFuncall)
                 AST *arg = ast->right->left;
                 if (arg && ast->right->right == NULL && IsConstExpr(arg)) {
                     int n = EvalConstExpr(arg);
-                    char *s = malloc(2);
+                    char *s = (char *)malloc(2);
                     s[0] = n;
                     s[1] = 0;
                     *ast = *AstStringPtr(s);