From 480538737a8a9be074a1848f2e52cf2d1ff4709f Mon Sep 17 00:00:00 2001
From: "graham.gower" <graham.gower@e8e0d7a0-c8d9-11dd-a880-a1081c7ac358>
Date: Thu, 5 Nov 2009 04:20:09 +0000
Subject: [PATCH] s/malloc/xmalloc/ s/calloc/xcalloc/ s/realloc/realloc/

And redundant error checking removed from the places where allocation failures
were actually checked.

git-svn-id: http://opkg.googlecode.com/svn/trunk@259 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358
---
 libopkg/active_list.c   |  3 +-
 libopkg/file_util.c     | 18 ++---------
 libopkg/hash_table.c    | 12 ++------
 libopkg/nv_pair_list.c  |  9 ++----
 libopkg/opkg.c          |  8 ++---
 libopkg/opkg_cmd.c      |  4 +--
 libopkg/opkg_conf.c     | 20 ++++---------
 libopkg/opkg_install.c  |  4 +--
 libopkg/opkg_remove.c   | 17 +++--------
 libopkg/opkg_utils.c    | 22 ++++----------
 libopkg/pkg.c           | 14 ++-------
 libopkg/pkg_depends.c   | 66 ++++++++++-------------------------------
 libopkg/pkg_dest_list.c |  9 ++----
 libopkg/pkg_hash.c      |  3 +-
 libopkg/pkg_parse.c     | 16 ++++------
 libopkg/pkg_src_list.c  |  8 ++---
 libopkg/pkg_vec.c       | 29 ++++--------------
 libopkg/sprintf_alloc.c | 16 +++-------
 libopkg/str_list.c      |  5 ++--
 libopkg/void_list.c     |  7 ++---
 libopkg/xregex.c        |  9 +++---
 21 files changed, 80 insertions(+), 219 deletions(-)

diff --git a/libopkg/active_list.c b/libopkg/active_list.c
index 1d38d8d..6b177c6 100644
--- a/libopkg/active_list.c
+++ b/libopkg/active_list.c
@@ -21,6 +21,7 @@
 #include <string.h>
 #include <stdlib.h>
 
+#include "libbb/libbb.h"
 
 void active_list_init(struct active_list *ptr) {
     INIT_LIST_HEAD(&ptr->node);
@@ -119,7 +120,7 @@ void active_list_add(struct active_list *head, struct active_list *node) {
 }
 
 struct active_list * active_list_head_new() {
-    struct active_list * head = calloc(1, sizeof(struct active_list));
+    struct active_list * head = xcalloc(1, sizeof(struct active_list));
     active_list_init(head);
     return head;
 }
diff --git a/libopkg/file_util.c b/libopkg/file_util.c
index b867df7..902b8c9 100644
--- a/libopkg/file_util.c
+++ b/libopkg/file_util.c
@@ -75,11 +75,7 @@ char *file_read_line_alloc(FILE *file)
 	buf_len = strlen(buf);
 	if (line) {
 	    line_size += buf_len;
-	    line = realloc(line, line_size);
-	    if (line == NULL) {
-		fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-		break;
-	    }
+	    line = xrealloc(line, line_size);
 	    strcat(line, buf);
 	} else {
 	    line_size = buf_len + 1;
@@ -147,11 +143,7 @@ char *file_md5sum_alloc(const char *file_name)
     char *md5sum_hex;
     unsigned char md5sum_bin[md5sum_bin_len];
 
-    md5sum_hex = calloc(1, md5sum_hex_len + 1);
-    if (md5sum_hex == NULL) {
-	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	return NULL;
-    }
+    md5sum_hex = xcalloc(1, md5sum_hex_len + 1);
 
     file = fopen(file_name, "r");
     if (file == NULL) {
@@ -200,11 +192,7 @@ char *file_sha256sum_alloc(const char *file_name)
     char *sha256sum_hex;
     unsigned char sha256sum_bin[sha256sum_bin_len];
 
-    sha256sum_hex = calloc(1, sha256sum_hex_len + 1);
-    if (sha256sum_hex == NULL) {
-	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	return NULL;
-    }
+    sha256sum_hex = xcalloc(1, sha256sum_hex_len + 1);
 
     file = fopen(file_name, "r");
     if (file == NULL) {
diff --git a/libopkg/hash_table.c b/libopkg/hash_table.c
index 6de9085..df6ff4f 100644
--- a/libopkg/hash_table.c
+++ b/libopkg/hash_table.c
@@ -69,11 +69,8 @@ int hash_table_init(const char *name, hash_table_t *hash, int len)
     --picker;
 
     hash->n_entries = *picker;
-    hash->entries = (hash_entry_t *)calloc(hash->n_entries, sizeof(hash_entry_t));
-    if (hash->entries == NULL) {
-	fprintf(stderr, "%s: Out of memory.\n", __FUNCTION__);
-	return ENOMEM;
-    }
+    hash->entries = xcalloc(hash->n_entries, sizeof(hash_entry_t));
+
     return 0;
 }
 
@@ -147,10 +144,7 @@ int hash_table_insert(hash_table_t *hash, const char *key, void *value)
                         return 0;
                     }
                }
-	       hash_entry->next = (hash_entry_t *)calloc(1, sizeof(hash_entry_t));
-	       if (!hash_entry->next) {
-		    return -ENOMEM;
-	       }
+	       hash_entry->next = xcalloc(1, sizeof(hash_entry_t));
 	       hash_entry = hash_entry->next;
 	       hash_entry->next = NULL;
 	  }
diff --git a/libopkg/nv_pair_list.c b/libopkg/nv_pair_list.c
index e98d718..5b6d4ff 100644
--- a/libopkg/nv_pair_list.c
+++ b/libopkg/nv_pair_list.c
@@ -20,7 +20,7 @@
 #include "nv_pair.h"
 #include "void_list.h"
 #include "nv_pair_list.h"
-
+#include "libbb/libbb.h"
 
 int nv_pair_list_init(nv_pair_list_t *list)
 {
@@ -51,12 +51,7 @@ nv_pair_t *nv_pair_list_append(nv_pair_list_t *list, const char *name, const cha
     int err;
 
     /* freed in nv_pair_list_deinit */
-    nv_pair_t *nv_pair = calloc(1, sizeof(nv_pair_t));
-
-    if (nv_pair == NULL) {
-	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	return NULL;
-    }
+    nv_pair_t *nv_pair = xcalloc(1, sizeof(nv_pair_t));
     nv_pair_init(nv_pair, name, value);
 
     err = void_list_append((void_list_t *) list, nv_pair);
diff --git a/libopkg/opkg.c b/libopkg/opkg.c
index 4375440..d7948e9 100644
--- a/libopkg/opkg.c
+++ b/libopkg/opkg.c
@@ -162,7 +162,7 @@ opkg_package_new ()
 
   opkg_package_t *p;
 
-  p = calloc (1, sizeof (opkg_package_t));
+  p = xcalloc(1, sizeof (opkg_package_t));
 
   return p;
 }
@@ -187,9 +187,9 @@ opkg_new ()
   opkg_t *opkg;
   int err;
 
-  opkg = calloc (1, sizeof (opkg_t));
+  opkg = xcalloc(1, sizeof (opkg_t));
 
-  opkg->args = calloc (1, sizeof (args_t));
+  opkg->args = xcalloc(1, sizeof (args_t));
   err = args_init (opkg->args);
   if (err)
   {
@@ -198,7 +198,7 @@ opkg_new ()
     return NULL;
   }
 
-  opkg->conf = calloc (1, sizeof (opkg_conf_t));
+  opkg->conf = xcalloc(1, sizeof (opkg_conf_t));
   err = opkg_conf_init (opkg->conf, opkg->args);
   if (err)
   {
diff --git a/libopkg/opkg_cmd.c b/libopkg/opkg_cmd.c
index 9c1612b..807777e 100644
--- a/libopkg/opkg_cmd.c
+++ b/libopkg/opkg_cmd.c
@@ -306,7 +306,7 @@ static opkg_intercept_t opkg_prep_intercepts(opkg_conf_t *conf)
     char *newpath;
     int gen;
 
-    ctx = calloc (1, sizeof (*ctx));
+    ctx = xcalloc(1, sizeof (*ctx));
     ctx->oldpath = xstrdup(getenv("PATH"));
 
     sprintf_alloc (&newpath, "%s/opkg/intercept:%s", DATADIR, ctx->oldpath);
@@ -877,7 +877,7 @@ static int opkg_remove_cmd(opkg_conf_t *conf, int argc, char **argv)
         available = pkg_vec_alloc();
         pkg_hash_fetch_all_installed(&conf->pkg_hash, available);
         for (i=0; i < argc; i++) {
-           pkg_name = calloc(1, strlen(argv[i])+2);
+           pkg_name = xcalloc(1, strlen(argv[i])+2);
            strcpy(pkg_name,argv[i]);
            for (a=0; a < available->len; a++) {
                pkg = available->pkgs[a];
diff --git a/libopkg/opkg_conf.c b/libopkg/opkg_conf.c
index a273c30..cfbdc5b 100644
--- a/libopkg/opkg_conf.c
+++ b/libopkg/opkg_conf.c
@@ -94,12 +94,7 @@ int opkg_init_options_array(const opkg_conf_t *conf, opkg_option_t **options)
 	  { NULL }
      };
 
-     *options = (opkg_option_t *)calloc(1, sizeof(tmp));
-     if ( options == NULL ){
-        fprintf(stderr,"%s: Unable to allocate memory\n",__FUNCTION__);
-        return -1;
-     }
-
+     *options = xcalloc(1, sizeof(tmp));
      memcpy(*options, tmp, sizeof(tmp));
      return 0;
 };
@@ -186,7 +181,7 @@ int opkg_conf_init(opkg_conf_t *conf, const args_t *args)
      pkg_hash_init("pkg-hash", &conf->pkg_hash, OPKG_CONF_DEFAULT_HASH_LEN);
      hash_table_init("file-hash", &conf->file_hash, OPKG_CONF_DEFAULT_HASH_LEN);
      hash_table_init("obs-file-hash", &conf->obs_file_hash, OPKG_CONF_DEFAULT_HASH_LEN);
-     lists_dir=(char *)malloc(1);
+     lists_dir=xmalloc(1);
      lists_dir[0]='\0';
      if (args->conf_file) {
 	  struct stat stat_buf;
@@ -200,7 +195,7 @@ int opkg_conf_init(opkg_conf_t *conf, const args_t *args)
      }
 
      if (strlen(lists_dir)<=1 ){
-        lists_dir = realloc(lists_dir,strlen(OPKG_CONF_LISTS_DIR)+2);
+        lists_dir = xrealloc(lists_dir,strlen(OPKG_CONF_LISTS_DIR)+2);
         sprintf (lists_dir,"%s",OPKG_CONF_LISTS_DIR);
      }
 
@@ -211,7 +206,7 @@ int opkg_conf_init(opkg_conf_t *conf, const args_t *args)
             lists_dir = tmp;
      }
 
-     pending_dir = calloc(1, strlen(lists_dir)+strlen("/pending")+5);
+     pending_dir = xcalloc(1, strlen(lists_dir)+strlen("/pending")+5);
      snprintf(pending_dir,strlen(lists_dir)+strlen("/pending") ,"%s%s",lists_dir,"/pending");
 
      conf->lists_dir = xstrdup(lists_dir);
@@ -619,12 +614,7 @@ static int opkg_conf_parse_file(opkg_conf_t *conf, const char *filename,
 	  } else if (strcmp(type, "dest") == 0) {
 	       nv_pair_list_append(tmp_dest_nv_pair_list, name, value);
 	  } else if (strcmp(type, "lists_dir") == 0) {
-	       *lists_dir = realloc(*lists_dir,strlen(value)+1);
-               if (*lists_dir == NULL) {
-		    opkg_message(conf, OPKG_ERROR, "ERROR: Not enough memory\n");
-	            free(options);
-	            return EINVAL;
-               }
+	       *lists_dir = xrealloc(*lists_dir,strlen(value)+1);
                sprintf (*lists_dir,"%s",value);
 	  } else if (strcmp(type, "arch") == 0) {
 	       opkg_message(conf, OPKG_INFO, "supported arch %s priority (%s)\n", name, value);
diff --git a/libopkg/opkg_install.c b/libopkg/opkg_install.c
index 2d5bb4e..61563d6 100644
--- a/libopkg/opkg_install.c
+++ b/libopkg/opkg_install.c
@@ -600,14 +600,14 @@ static int pkg_remove_orphan_dependent(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old
         if (found)
             continue;
         d_str = old_pkg->depends_str[i];
-        buf = calloc (1, strlen (d_str) + 1);
+        buf = xcalloc(1, strlen (d_str) + 1);
         j=0;
         while (d_str[j] != '\0' && d_str[j] != ' ') {
             buf[j]=d_str[j];
             ++j;
         }
         buf[j]='\0';
-        buf = realloc (buf, strlen (buf) + 1);
+        buf = xrealloc (buf, strlen (buf) + 1);
         p = pkg_hash_fetch_installed_by_name (&conf->pkg_hash, buf);
         if (!p) {
             fprintf(stderr, "The pkg %s had been removed!!\n", buf);
diff --git a/libopkg/opkg_remove.c b/libopkg/opkg_remove.c
index 1eda4f6..ec7540b 100644
--- a/libopkg/opkg_remove.c
+++ b/libopkg/opkg_remove.c
@@ -27,6 +27,7 @@
 #include "file_util.h"
 #include "sprintf_alloc.h"
 #include "str_util.h"
+#include "libbb/libbb.h"
 
 /*
  * Returns number of the number of packages depending on the packages provided by this package.
@@ -54,12 +55,7 @@ int pkg_has_installed_dependents(opkg_conf_t *conf, abstract_pkg_t *parent_apkg,
      /* if caller requested the set of installed dependents */
      if (pdependents) {
 	  int p = 0;
-	  abstract_pkg_t **dependents = (abstract_pkg_t **)calloc((n_installed_dependents+1), sizeof(abstract_pkg_t *));
-
-          if ( dependents == NULL ){
-              fprintf(stderr,"%s Unable to allocate memory. REPORT THIS BUG IN BUGZILLA PLEASE\n", __FUNCTION__);
-              return -1;  
-          }
+	  abstract_pkg_t **dependents = xcalloc((n_installed_dependents+1), sizeof(abstract_pkg_t *));
 
 	  *pdependents = dependents;
 	  for (i = 0; i <= nprovides; i++) {
@@ -181,12 +177,7 @@ static int remove_autoinstalled (opkg_conf_t *conf, pkg_t *pkg)
     int x = 0;
     pkg_t *p;
     d_str = pkg->depends_str[i];
-    buffer = calloc (1, strlen (d_str) + 1);
-    if (!buffer)
-    {
-      fprintf(stderr,"%s Unable to allocate memory.\n", __FUNCTION__);
-      return -1;
-    }
+    buffer = xcalloc(1, strlen (d_str) + 1);
 
     while (d_str[x] != '\0' && d_str[x] != ' ')
     {
@@ -194,7 +185,7 @@ static int remove_autoinstalled (opkg_conf_t *conf, pkg_t *pkg)
       ++x;
     }
     buffer[x] = '\0';
-    buffer = realloc (buffer, strlen (buffer) + 1);
+    buffer = xrealloc (buffer, strlen (buffer) + 1);
     p = pkg_hash_fetch_installed_by_name (&conf->pkg_hash, buffer);
 
     /* if the package is not installed, this could have been a circular
diff --git a/libopkg/opkg_utils.c b/libopkg/opkg_utils.c
index ccc3496..20af4d5 100644
--- a/libopkg/opkg_utils.c
+++ b/libopkg/opkg_utils.c
@@ -70,20 +70,20 @@ char **read_raw_pkgs_from_stream(FILE *fp)
      int count = 0;
      size_t size = 512;
      
-     buf = calloc (1, size);
+     buf = xcalloc(1, size);
 
      while (fgets(buf, size, fp)) {
 	  while (strlen (buf) == (size - 1)
 		 && buf[size-2] != '\n') {
 	       size_t o = size - 1;
 	       size *= 2;
-	       buf = realloc (buf, size);
+	       buf = xrealloc (buf, size);
 	       if (fgets (buf + o, size - o, fp) == NULL)
 		    break;
 	  }
 	  
 	  if(!(count % 50))
-	       raw = realloc(raw, (count + 50) * sizeof(char *));
+	       raw = xrealloc(raw, (count + 50) * sizeof(char *));
 	
 	  if((scout = strchr(buf, '\n')))
 	       *scout = '\0';
@@ -91,7 +91,7 @@ char **read_raw_pkgs_from_stream(FILE *fp)
 	  raw[count++] = xstrdup(buf);
      }
     
-     raw = realloc(raw, (count + 1) * sizeof(char *));
+     raw = xrealloc(raw, (count + 1) * sizeof(char *));
      raw[count] = NULL;
 
      free (buf);
@@ -105,11 +105,7 @@ char *trim_alloc(char *line)
      char *new; 
      char *dest, *src, *end;
     
-     new = calloc(1, strlen(line) + 1);
-     if ( new == NULL ){
-        fprintf(stderr,"%s: Unable to allocate memory\n",__FUNCTION__);
-        return NULL;
-     }
+     new = xcalloc(1, strlen(line) + 1);
      dest = new, src = line, end = line + (strlen(line) - 1);
 
      /* remove it from the front */    
@@ -157,13 +153,7 @@ void push_error_list(char * msg)
 {
 	struct errlist *e;
 
-	e = calloc(1,  sizeof(struct errlist));
-	if (e == NULL) {
-		fprintf(stderr, "%s: calloc: %s\n",
-				__FUNCTION__, strerror(errno));
-		return;
-	}
-
+	e = xcalloc(1,  sizeof(struct errlist));
 	e->errmsg = xstrdup(msg);
 	e->next = NULL;
 
diff --git a/libopkg/pkg.c b/libopkg/pkg.c
index 33d0d68..48169ea 100644
--- a/libopkg/pkg.c
+++ b/libopkg/pkg.c
@@ -79,7 +79,7 @@ pkg_t *pkg_new(void)
 {
      pkg_t *pkg;
 
-     pkg = calloc(1, sizeof(pkg_t));
+     pkg = xcalloc(1, sizeof(pkg_t));
      if (pkg == NULL) {
 	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
 	  return NULL;
@@ -450,7 +450,7 @@ abstract_pkg_t *abstract_pkg_new(void)
 {
      abstract_pkg_t * ab_pkg;
 
-     ab_pkg = calloc(1, sizeof(abstract_pkg_t));
+     ab_pkg = xcalloc(1, sizeof(abstract_pkg_t));
 
      if (ab_pkg == NULL) {
 	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
@@ -992,10 +992,6 @@ str_list_t *pkg_get_installed_files(pkg_t *pkg)
      }
 
      pkg->installed_files = str_list_alloc();
-     if (pkg->installed_files == NULL) {
-	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	  return NULL;
-     }
 
      /* For uninstalled packages, get the file list directly from the package.
 	For installed packages, look at the package.list file in the database.
@@ -1262,11 +1258,7 @@ char *pkg_state_flag_to_str(pkg_state_flag_t sf)
 		    len += strlen(pkg_state_flag_map[i].str) + 1;
 	       }
 	  }
-	  str = malloc(len);
-          if ( str == NULL ) {
-	      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-              return NULL;
-          }
+	  str = xmalloc(len);
 	  str[0] = 0;
 	  for (i=0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 	       if (sf & pkg_state_flag_map[i].value) {
diff --git a/libopkg/pkg_depends.c b/libopkg/pkg_depends.c
index 6ce9fdd..3210e9d 100644
--- a/libopkg/pkg_depends.c
+++ b/libopkg/pkg_depends.c
@@ -573,24 +573,20 @@ static char ** merge_unresolved(char ** oldstuff, char ** newstuff)
 
     if(!newstuff)
 	return oldstuff;
-    
+
     while(oldstuff && oldstuff[oldlen]) oldlen++;
     while(newstuff && newstuff[newlen]) newlen++;
-    
-    result = (char **)realloc(oldstuff, sizeof(char *) * (oldlen + newlen + 1));
-    if (result == NULL) {
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return NULL;
-    }
-    
+
+    result = xrealloc(oldstuff, sizeof(char *) * (oldlen + newlen + 1));
+
     for(i = oldlen, j = 0; i < (oldlen + newlen); i++, j++)
 	*(result + i) = *(newstuff + j);
-    
+
     *(result + i) = NULL;
 
     return result;
 }
-    
+
 /* 
  * a kinda kludgy way to back out depends str from two different arrays (reg'l'r 'n pre)
  * this is null terminated, no count is carried around 
@@ -605,11 +601,7 @@ char ** add_unresolved_dep(pkg_t * pkg, char ** the_lost, int ref_ndx)
     while(the_lost && the_lost[count]) count++;
 
     count++;  /* need one to hold the null */
-    resized = (char **)realloc(the_lost, sizeof(char *) * (count + 1));
-    if (resized == NULL) {
-       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-       return NULL;
-    }
+    resized = xrealloc(the_lost, sizeof(char *) * (count + 1));
     resized[count - 1] = xstrdup(depend_str);
     resized[count] = NULL;
     
@@ -654,11 +646,7 @@ int buildProvides(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
     if (pkg->provides)
       return 0;
 
-    pkg->provides = (abstract_pkg_t **)calloc((pkg->provides_count + 1), sizeof(abstract_pkg_t *));
-    if (pkg->provides == NULL) {
-       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-       return -1 ;
-    }
+    pkg->provides = xcalloc((pkg->provides_count + 1), sizeof(abstract_pkg_t *));
     pkg->provides[0] = ab_pkg;
 
     // if (strcmp(ab_pkg->name, pkg->name))
@@ -684,11 +672,7 @@ int buildConflicts(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
     if (!pkg->conflicts_count)
 	return 0;
 
-    conflicts = pkg->conflicts = calloc(pkg->conflicts_count, sizeof(compound_depend_t));
-    if (conflicts == NULL) {
-       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-       return  -1;
-    }
+    conflicts = pkg->conflicts = xcalloc(pkg->conflicts_count, sizeof(compound_depend_t));
     for (i = 0; i < pkg->conflicts_count; i++) {
 	 conflicts->type = CONFLICTS;
 	 parseDepends(conflicts, hash,
@@ -705,11 +689,7 @@ int buildReplaces(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
      if (!pkg->replaces_count)
 	  return 0;
 
-     pkg->replaces = (abstract_pkg_t **)calloc(pkg->replaces_count, sizeof(abstract_pkg_t *));
-     if (pkg->replaces == NULL) {
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return  -1;
-     }
+     pkg->replaces = xcalloc(pkg->replaces_count, sizeof(abstract_pkg_t *));
 
      for(i = 0; i < pkg->replaces_count; i++){
 	  abstract_pkg_t *old_abpkg = ensure_abstract_pkg_by_name(hash, pkg->replaces_str[i]);
@@ -719,9 +699,6 @@ int buildReplaces(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
 	  j = 0;
 	  if (!old_abpkg->replaced_by)
 	       old_abpkg->replaced_by = abstract_pkg_vec_alloc();
-               if ( old_abpkg->replaced_by == NULL ){
-                  return -1;
-               }
 	  /* if a package pkg both replaces and conflicts old_abpkg,
 	   * then add it to the replaced_by vector so that old_abpkg
 	   * will be upgraded to ab_pkg automatically */
@@ -743,12 +720,7 @@ int buildDepends(hash_table_t * hash, pkg_t * pkg)
      if (0 && pkg->pre_depends_count)
 	  fprintf(stderr, "pkg=%s pre_depends_count=%d depends_count=%d\n", 
 		  pkg->name, pkg->pre_depends_count, pkg->depends_count);
-     depends = pkg->depends = calloc(count, sizeof(compound_depend_t));
-     if (depends == NULL) {
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return  -1;
-     }
-     
+     depends = pkg->depends = xcalloc(count, sizeof(compound_depend_t));
 
      for(i = 0; i < pkg->pre_depends_count; i++){
 	  parseDepends(depends, hash, pkg->pre_depends_str[i]);
@@ -856,7 +828,7 @@ void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg)
 	  for (j = 0; j < depends->possibility_count; j++){
 	       ab_depend = depends->possibilities[j]->pkg;
 	       if(!ab_depend->depended_upon_by)
-		    ab_depend->depended_upon_by = (abstract_pkg_t **)calloc(1, sizeof(abstract_pkg_t *));
+		    ab_depend->depended_upon_by = xcalloc(1, sizeof(abstract_pkg_t *));
 
 	       temp = ab_depend->depended_upon_by;
 	       othercount = 1;
@@ -866,7 +838,7 @@ void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg)
 	       }
 	       *temp = ab_pkg;
 
-	       ab_depend->depended_upon_by = (abstract_pkg_t **)realloc(ab_depend->depended_upon_by, 
+	       ab_depend->depended_upon_by = xrealloc(ab_depend->depended_upon_by, 
 									(othercount + 1) * sizeof(abstract_pkg_t *));
 	       /* the array may have moved */
 	       temp = ab_depend->depended_upon_by + othercount;
@@ -878,11 +850,7 @@ void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg)
 
 static depend_t * depend_init(void)
 {
-    depend_t * d = (depend_t *)calloc(1, sizeof(depend_t));    
-    if ( d==NULL ){
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return NULL; 
-     }
+    depend_t * d = xcalloc(1, sizeof(depend_t));    
     d->constraint = NONE;
     d->version = NULL;
     d->pkg = NULL;
@@ -913,16 +881,12 @@ static int parseDepends(compound_depend_t *compound_depend,
      compound_depend->type = DEPEND;
 
      compound_depend->possibility_count = num_of_ors + 1;
-     possibilities = (depend_t **)calloc((num_of_ors + 1), sizeof(depend_t *) );
-     if (!possibilities)
-	  return -ENOMEM;
+     possibilities = xcalloc((num_of_ors + 1), sizeof(depend_t *) );
      compound_depend->possibilities = possibilities;
 
      src = depend_str;
      for(i = 0; i < num_of_ors + 1; i++){
 	  possibilities[i] = depend_init();
-          if (!possibilities[i])
-	       return -ENOMEM;
 	  /* gobble up just the name first */
 	  dest = buffer;
 	  while(*src &&
diff --git a/libopkg/pkg_dest_list.c b/libopkg/pkg_dest_list.c
index 2c03e73..f8a7c52 100644
--- a/libopkg/pkg_dest_list.c
+++ b/libopkg/pkg_dest_list.c
@@ -20,6 +20,7 @@
 #include "pkg_dest.h"
 #include "void_list.h"
 #include "pkg_dest_list.h"
+#include "libbb/libbb.h"
 
 int pkg_dest_list_elt_init(pkg_dest_list_elt_t *elt, pkg_dest_t *data)
 {
@@ -58,12 +59,8 @@ pkg_dest_t *pkg_dest_list_append(pkg_dest_list_t *list, const char *name,
     int err;
     pkg_dest_t *pkg_dest;
 
-    /* freed in plg_dest_list_deinit */
-    pkg_dest = calloc(1, sizeof(pkg_dest_t));
-    if (pkg_dest == NULL) {
-	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	return NULL;
-    }
+    /* freed in pkg_dest_list_deinit */
+    pkg_dest = xcalloc(1, sizeof(pkg_dest_t));
 
     pkg_dest_init(pkg_dest, name, root_dir,lists_dir);
     err = void_list_append((void_list_t *) list, pkg_dest);
diff --git a/libopkg/pkg_hash.c b/libopkg/pkg_hash.c
index 978ccb2..e92a56f 100644
--- a/libopkg/pkg_hash.c
+++ b/libopkg/pkg_hash.c
@@ -186,8 +186,7 @@ pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pk
      if (err)
        *err = 0;
 
-     if (matching_apkgs == NULL || providers == NULL || 
-         apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
+     if (apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
 	  return NULL;
 
      opkg_message(conf, OPKG_DEBUG, "best installation candidate for %s\n", apkg->name);
diff --git a/libopkg/pkg_parse.c b/libopkg/pkg_parse.c
index 5389479..98d7a9b 100644
--- a/libopkg/pkg_parse.c
+++ b/libopkg/pkg_parse.c
@@ -62,7 +62,7 @@ char ** parseDependsString(char * raw, int * depends_count)
 	return NULL;
     }
     while(raw && *raw){
-	depends = (char **)realloc(depends, sizeof(char *) * (line_count + 1));
+	depends = xrealloc(depends, sizeof(char *) * (line_count + 1));
 	
 	while(isspace(*raw)) raw++;
 
@@ -142,12 +142,8 @@ int parseVersion(pkg_t *pkg, char *raw)
 
   if (!pkg->version)
   {
-  pkg->version= calloc(1, strlen(raw)+1);
-  if ( pkg->version == NULL ) {
-     fprintf(stderr, "%s: out of memory \n", __FUNCTION__);
-     return ENOMEM;
-  }
-  strcpy(pkg->version, raw);
+    pkg->version= xcalloc(1, strlen(raw)+1);
+    strcpy(pkg->version, raw);
   }
 
   hyphen= strrchr(pkg->version,'-');
@@ -231,7 +227,7 @@ int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
 		pkg->priority = parseGenericFieldType("Priority", *lines);
 	    else if(isGenericFieldType("Provides", *lines)){
 /* Here we add the internal_use to align the off by one problem between provides_str and provides */
-        	provide = (char * ) calloc(1, strlen(*lines)+ 35 ); /* Preparing the space for the new opkg_internal_use_only */
+        	provide = xcalloc(1, strlen(*lines)+ 35 ); /* Preparing the space for the new opkg_internal_use_only */
         	if ( alterProvidesLine(*lines,provide) ){
         	    return EINVAL;
         	}
@@ -353,7 +349,7 @@ int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
 	case ' ':
 	    if(reading_description) {
 		/* we already know it's not blank, so the rest of description */      
-		pkg->description = realloc(pkg->description,
+		pkg->description = xrealloc(pkg->description,
 					   strlen(pkg->description)
 					   + 1 + strlen(*lines) + 1);
 		strcat(pkg->description, "\n");
@@ -378,7 +374,7 @@ out:;
     if ( pkg_false_provides==1)
     {
        pkg->provides_count = 1;
-       pkg->provides_str = calloc (1, sizeof (char*));
+       pkg->provides_str = xcalloc(1, sizeof (char*));
        pkg->provides_str[0] = xstrdup("opkg_internal_use_only");
     }
 
diff --git a/libopkg/pkg_src_list.c b/libopkg/pkg_src_list.c
index 9a2a90f..cd7fce4 100644
--- a/libopkg/pkg_src_list.c
+++ b/libopkg/pkg_src_list.c
@@ -19,6 +19,7 @@
 
 #include "pkg_src_list.h"
 #include "void_list.h"
+#include "libbb/libbb.h"
 
 int pkg_src_list_init(pkg_src_list_t *list)
 {
@@ -48,12 +49,7 @@ pkg_src_t *pkg_src_list_append(pkg_src_list_t *list,
     int err;
 
     /* freed in pkg_src_list_deinit */
-    pkg_src_t *pkg_src = calloc(1, sizeof(pkg_src_t));
-
-    if (pkg_src == NULL) {
-	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	return NULL;
-    }
+    pkg_src_t *pkg_src = xcalloc(1, sizeof(pkg_src_t));
     pkg_src_init(pkg_src, name, base_url, extra_data, gzip);
 
     err = void_list_append((void_list_t *) list, pkg_src);
diff --git a/libopkg/pkg_vec.c b/libopkg/pkg_vec.c
index fa2c237..9e4f26b 100644
--- a/libopkg/pkg_vec.c
+++ b/libopkg/pkg_vec.c
@@ -20,14 +20,11 @@
 #include "xregex.h"
 #include "pkg.h"
 #include "opkg_message.h"
+#include "libbb/libbb.h"
 
 pkg_vec_t * pkg_vec_alloc(void)
 {
-    pkg_vec_t * vec = (pkg_vec_t *)calloc(1, sizeof(pkg_vec_t));
-    if (!vec) {
-      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-      return NULL;
-    }
+    pkg_vec_t * vec = xcalloc(1, sizeof(pkg_vec_t));
     vec->pkgs = NULL;
     vec->len = 0;
 
@@ -103,13 +100,7 @@ pkg_t *pkg_vec_insert_merge(pkg_vec_t *vec, pkg_t *pkg, int set_status,opkg_conf
 
 void pkg_vec_insert(pkg_vec_t *vec, const pkg_t *pkg)
 {
-    pkg_t **tmp;
-    tmp = realloc(vec->pkgs, (vec->len + 1) * sizeof(pkg_t *));
-    if (tmp == NULL) {
-        fprintf(stderr, "%s: %s\n", __FUNCTION__, strerror(errno));
-	return;
-    }
-    vec->pkgs = tmp;
+    vec->pkgs = xrealloc(vec->pkgs, (vec->len + 1) * sizeof(pkg_t *));
     vec->pkgs[vec->len] = (pkg_t *)pkg;
     vec->len++;
 }
@@ -159,11 +150,7 @@ int pkg_vec_mark_if_matches(pkg_vec_t *vec, const char *pattern)
 abstract_pkg_vec_t * abstract_pkg_vec_alloc(void)
 {
     abstract_pkg_vec_t * vec ; 
-    vec = (abstract_pkg_vec_t *)calloc(1, sizeof(abstract_pkg_vec_t));
-    if (!vec) {
-      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-      return NULL;
-    }
+    vec = xcalloc(1, sizeof(abstract_pkg_vec_t));
     vec->pkgs = NULL;
     vec->len = 0;
 
@@ -183,13 +170,7 @@ void abstract_pkg_vec_free(abstract_pkg_vec_t *vec)
  */
 void abstract_pkg_vec_insert(abstract_pkg_vec_t *vec, abstract_pkg_t *pkg)
 {
-    abstract_pkg_t **tmp;
-    tmp = realloc(vec->pkgs, (vec->len + 1) * sizeof(abstract_pkg_t *));
-    if (tmp == NULL) {
-        fprintf(stderr, "%s: %s\n", __FUNCTION__, strerror(errno));
-	return;
-    }
-    vec->pkgs = tmp;
+    vec->pkgs = xrealloc(vec->pkgs, (vec->len + 1) * sizeof(abstract_pkg_t *));
     vec->pkgs[vec->len] = pkg;
     vec->len++;
 }
diff --git a/libopkg/sprintf_alloc.c b/libopkg/sprintf_alloc.c
index 30ab033..7989493 100644
--- a/libopkg/sprintf_alloc.c
+++ b/libopkg/sprintf_alloc.c
@@ -19,11 +19,11 @@
 #include <stdarg.h>
 
 #include "sprintf_alloc.h"
+#include "libbb/libbb.h"
 
 int sprintf_alloc(char **str, const char *fmt, ...)
 {
     va_list ap;
-    char *new_str;
     int n, size = 100;
 
     if (!str) {
@@ -44,13 +44,11 @@ int sprintf_alloc(char **str, const char *fmt, ...)
 
     /* ripped more or less straight out of PRINTF(3) */
 
-    if ((new_str = calloc(1, size)) == NULL) 
-      return -1;
+    *str = xcalloc(1, size);
 
-    *str = new_str;
     while(1) {
       va_start(ap, fmt);
-      n = vsnprintf (new_str, size, fmt, ap);
+      n = vsnprintf (*str, size, fmt, ap);
       va_end(ap);
       /* If that worked, return the size. */
       if (n > -1 && n < size)
@@ -60,13 +58,7 @@ int sprintf_alloc(char **str, const char *fmt, ...)
 	    size = n+1; /* precisely what is needed */
 	else           /* glibc 2.0 */
 	    size *= 2;  /* twice the old size */
-	new_str = realloc(new_str, size);
-	if (new_str == NULL) {
-	    free(new_str);
-	    *str = NULL;
-	    return -1;
-	}
-	*str = new_str;
+	*str = xrealloc(*str, size);
     }
 
     return -1; /* Just to be correct - it probably won't get here */
diff --git a/libopkg/str_list.c b/libopkg/str_list.c
index be42967..a8e179d 100644
--- a/libopkg/str_list.c
+++ b/libopkg/str_list.c
@@ -33,9 +33,8 @@ void str_list_elt_deinit(str_list_elt_t *elt)
 
 str_list_t *str_list_alloc()
 {
-     str_list_t *list = (str_list_t *)calloc(1, sizeof(str_list_t));
-     if (list)
-	  str_list_init(list);
+     str_list_t *list = xcalloc(1, sizeof(str_list_t));
+     str_list_init(list);
      return list;
 }
 
diff --git a/libopkg/void_list.c b/libopkg/void_list.c
index 1517228..e36b451 100644
--- a/libopkg/void_list.c
+++ b/libopkg/void_list.c
@@ -19,6 +19,7 @@
 #include <errno.h>
 
 #include "void_list.h"
+#include "libbb/libbb.h"
 
 int void_list_elt_init(void_list_elt_t *elt, void *data)
 {
@@ -31,11 +32,7 @@ int void_list_elt_init(void_list_elt_t *elt, void *data)
 void_list_elt_t * void_list_elt_new (void *data) {
     void_list_elt_t *elt;
     /* freed in void_list_elt_deinit */
-    elt = calloc(1, sizeof(void_list_elt_t));
-    if (elt == NULL) {
-	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-	return NULL;
-    }
+    elt = xcalloc(1, sizeof(void_list_elt_t));
     void_list_elt_init(elt, data);
     return elt;
 }
diff --git a/libopkg/xregex.c b/libopkg/xregex.c
index b0cd8b9..ba22b7d 100644
--- a/libopkg/xregex.c
+++ b/libopkg/xregex.c
@@ -18,6 +18,7 @@
 #include "includes.h"
 
 #include "xregex.h"
+#include "libbb/libbb.h"
 
 static void print_regcomp_err(const regex_t *preg, int err);
 
@@ -39,10 +40,8 @@ static void print_regcomp_err(const regex_t *preg, int err)
     
     fprintf(stderr, "%s: Error compiling regex:", __FUNCTION__);
     size = regerror(err, preg, 0, 0);
-    error = calloc(1, size);
-    if (error) {
-	regerror(err, preg, error, size);
-	fprintf(stderr, "%s\n", error);
-    }
+    error = xcalloc(1, size);
+    regerror(err, preg, error, size);
+    fprintf(stderr, "%s\n", error);
     free(error);
 }
-- 
2.25.1