From 945f73751630db0420522b5d6af0629d90376a45 Mon Sep 17 00:00:00 2001
From: Ash Wolf <ninji@wuffs.org>
Date: Wed, 12 Oct 2022 18:07:57 +0100
Subject: almost finished OSLib

---
 command_line/CmdLine/Src/OSLib/MemUtils.c | 41 ++++++++++++++++++++++++++++---
 1 file changed, 37 insertions(+), 4 deletions(-)

(limited to 'command_line/CmdLine/Src/OSLib/MemUtils.c')

diff --git a/command_line/CmdLine/Src/OSLib/MemUtils.c b/command_line/CmdLine/Src/OSLib/MemUtils.c
index 4eb611c..fcacd81 100644
--- a/command_line/CmdLine/Src/OSLib/MemUtils.c
+++ b/command_line/CmdLine/Src/OSLib/MemUtils.c
@@ -1,21 +1,54 @@
 #include "oslib.h"
 
 void *xmalloc(const char *what, int size) {
-
+    void *ret;
+
+    ret = malloc(size ? size : 1);
+    if (!ret) {
+        fprintf(
+                stderr,
+                "*** Out of memory when allocating %d bytes%s%s",
+                size,
+                what ? " for " : "",
+                what ? what : "");
+        exit(-23);
+        return 0;
+    }
+
+    return ret;
 }
 
 void *xcalloc(const char *what, int size) {
+    void *ret;
 
+    ret = xmalloc(what, size);
+    memset(ret, 0, size);
+    return ret;
 }
 
 void *xrealloc(const char *what, void *old, int size) {
-
+    void *ret;
+
+    ret = realloc(old, size ? size : 1);
+    if (!ret) {
+        fprintf(
+                stderr,
+                "*** Out of memory when resizing buffer to %d bytes%s%s",
+                size,
+                what ? " for " : "",
+                what ? what : "");
+        exit(-23);
+        return 0;
+    }
+
+    return ret;
 }
 
 char *xstrdup(const char *str) {
-
+    return strcpy(xmalloc(0, strlen(str) + 1), str);
 }
 
 void xfree(void *ptr) {
-
+    if (ptr)
+        free(ptr);
 }
-- 
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