X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/8387304e3f32d745a7b4ed4ee1c350477d0d513a..f2d4f32f6dd5a586d0f160a34467cdc8b9151317:/sbr/utils.c

diff --git a/sbr/utils.c b/sbr/utils.c
index 610f7904..c6f75e07 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -64,6 +64,24 @@ mh_xrealloc(void *ptr, size_t size)
     return memory;
 }
 
+/*
+ * Safely call calloc
+ */
+void *
+mh_xcalloc(size_t nmemb, size_t size)
+{
+    void *memory;
+
+    if (nmemb == 0  ||  size == 0)
+        adios(NULL, "Tried to calloc 0 bytes");
+
+    if ((memory = calloc(nmemb, size))) {
+        return memory;
+    } else {
+        adios(NULL, "calloc failed");
+    }
+}
+
 /*
  * Return the present working directory, if the current directory does not
  * exist, or is too long, make / the pwd.
@@ -79,7 +97,9 @@ pwd(void)
         if (!mypath || !*mypath
                 || (strcpy (curwd, mypath), chdir (curwd)) == -1) {
             strcpy (curwd, "/");
-            chdir (curwd);
+            if (chdir (curwd) < 0) {
+                advise (curwd, "chdir");
+            }
         }
         return curwd;
     }