diff --git a/src/dev/testDev/devTestAsyn.c b/src/dev/testDev/devTestAsyn.c
index e96018463..7ec9d7f00 100644
--- a/src/dev/testDev/devTestAsyn.c
+++ b/src/dev/testDev/devTestAsyn.c
@@ -25,13 +25,15 @@
 static long addRec(struct dbCommon *prec)
 {
     prec->dpvt = calloc(1, sizeof(CALLBACK));
-    return 0;
+    return !prec->dpvt;
 }
 
 static long delRec(struct dbCommon *prec)
 {
-    callbackCancelDelayed((CALLBACK *)prec->dpvt);
-    free(prec->dpvt);
+    if (prec->dpvt) {
+        callbackCancelDelayed((CALLBACK *)prec->dpvt);
+        free(prec->dpvt);
+    }
     return 0;
 }
 
diff --git a/src/libCom/misc/epicsUnitTest.c b/src/libCom/misc/epicsUnitTest.c
index 4559f4e92..e86c8a0d0 100644
--- a/src/libCom/misc/epicsUnitTest.c
+++ b/src/libCom/misc/epicsUnitTest.c
@@ -23,6 +23,7 @@
 #include "epicsExit.h"
 #include "epicsTime.h"
 #include "ellLib.h"
+#include "cantProceed.h"
 
 typedef struct {
     ELLNODE node;
@@ -191,7 +192,8 @@ int testDone(void) {
     }
     if (Harness) {
         if (failed) {
-            testFailure *fault = calloc(1, sizeof(testFailure));
+            testFailure *fault = callocMustSucceed(1, sizeof(testFailure),
+                "testDone calloc");
             fault->name     = testing;
             fault->tests    = tested;
             fault->failures = failed;
diff --git a/src/rec/subArrayRecord.c b/src/rec/subArrayRecord.c
index bac19b91f..b6a167945 100644
--- a/src/rec/subArrayRecord.c
+++ b/src/rec/subArrayRecord.c
@@ -36,6 +36,7 @@
 #include "errMdef.h"
 #include "recSup.h"
 #include "recGbl.h"
+#include "cantProceed.h"
 #define GEN_SIZE_OFFSET
 #include "subArrayRecord.h"
 #undef  GEN_SIZE_OFFSET
@@ -105,7 +106,8 @@ static long init_record(subArrayRecord *prec, int pass)
             prec->malm = 1;
         if (prec->ftvl > DBF_ENUM)
             prec->ftvl = DBF_UCHAR;
-        prec->bptr = calloc(prec->malm, dbValueSize(prec->ftvl));
+        prec->bptr = callocMustSucceed(prec->malm, dbValueSize(prec->ftvl),
+            "subArrayRecord calloc failed");
         prec->nord = 0;
         return 0;
     }
diff --git a/src/rec/waveformRecord.c b/src/rec/waveformRecord.c
index 034ff7d63..7cf1cf298 100644
--- a/src/rec/waveformRecord.c
+++ b/src/rec/waveformRecord.c
@@ -32,6 +32,7 @@
 #include "errMdef.h"
 #include "recSup.h"
 #include "recGbl.h"
+#include "cantProceed.h"
 #define GEN_SIZE_OFFSET
 #include "waveformRecord.h"
 #undef  GEN_SIZE_OFFSET
@@ -97,7 +98,8 @@ static long init_record(waveformRecord *prec, int pass)
             prec->nelm = 1;
         if (prec->ftvl > DBF_ENUM)
             prec->ftvl = DBF_UCHAR;
-        prec->bptr = calloc(prec->nelm, dbValueSize(prec->ftvl));
+        prec->bptr = callocMustSucceed(prec->nelm, dbValueSize(prec->ftvl),
+            "waveform calloc failed");
         if (prec->nelm == 1) {
             prec->nord = 1;
         } else {