diff --git a/acpica-tools.spec b/acpica-tools.spec
index 4c10b59..255161a 100644
--- a/acpica-tools.spec
+++ b/acpica-tools.spec
@@ -39,6 +39,7 @@ Patch12:        mips-be-fix.patch
 Patch13:        cve-2017-13693.patch
 Patch14:        cve-2017-13694.patch
 Patch15:        cve-2017-13695.patch
+Patch16:        str-trunc-warn.patch
 
 BuildRequires:  bison patchutils flex gcc
 
@@ -104,6 +105,7 @@ gzip -dc %{SOURCE1} | tar -x --strip-components=1 -f -
 %patch13 -p1 -b .cve-2017-13693
 %patch14 -p1 -b .cve-2017-13694
 %patch15 -p1 -b .cve-2017-13695
+%patch16 -p1 -b .str-trunc-warn
 
 cp -p %{SOURCE2} README.Fedora
 cp -p %{SOURCE3} iasl.1
@@ -249,6 +251,7 @@ fi
   made the wrong assumptions about what generate/unix/Makefile.config did with
   that value.  Added to the spec file what should happen so that a full and
   complete set of C flags get passed in, not just the small subset that was.
+- Clean up compiler warnings for truncated strings
 
 * Fri Feb 09 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 20180105-3
 - Escape macros in %%changelog
diff --git a/str-trunc-warn.patch b/str-trunc-warn.patch
new file mode 100644
index 0000000..badf721
--- /dev/null
+++ b/str-trunc-warn.patch
@@ -0,0 +1,112 @@
+Index: acpica-unix2-20180209/source/compiler/aslanalyze.c
+===================================================================
+--- acpica-unix2-20180209.orig/source/compiler/aslanalyze.c
++++ acpica-unix2-20180209/source/compiler/aslanalyze.c
+@@ -355,11 +355,16 @@ AnCheckMethodReturnValue (
+          */
+         if (ThisNodeBtype != 0)
+         {
+-            sprintf (MsgBuffer,
++	     int cnt;
++	     char *strp;
++
++            cnt = asprintf (&strp,
+                 "Method returns [%s], %s operator requires [%s]",
+                 StringBuffer, OpInfo->Name, StringBuffer2);
+ 
+-            AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer);
++            AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, strp);
++	     if (cnt > 0)
++	         free(strp);
+         }
+     }
+ }
+Index: acpica-unix2-20180209/source/compiler/aslpredef.c
+===================================================================
+--- acpica-unix2-20180209.orig/source/compiler/aslpredef.c
++++ acpica-unix2-20180209/source/compiler/aslpredef.c
+@@ -159,14 +159,19 @@ ApCheckForPredefinedMethod (
+         if (MethodInfo->NumReturnNoValue &&
+             ThisName->Info.ExpectedBtypes)
+         {
++	     int cnt;
++	     char *strp;
++
+             AcpiUtGetExpectedReturnTypes (StringBuffer,
+                 ThisName->Info.ExpectedBtypes);
+ 
+-            sprintf (MsgBuffer, "%s required for %4.4s",
+-                StringBuffer, ThisName->Info.Name);
++            cnt = asprintf (&strp, "%s required for %4.4s",
++	        StringBuffer, ThisName->Info.Name);
+ 
+             AslError (ASL_WARNING, ASL_MSG_RESERVED_RETURN_VALUE, Op,
+-                MsgBuffer);
++                strp);
++	     if (cnt > 0)
++	        free(strp);
+         }
+         break;
+     }
+@@ -698,18 +703,26 @@ TypeErrorExit:
+ 
+     AcpiUtGetExpectedReturnTypes (StringBuffer, ExpectedBtypes);
+ 
+-    if (PackageIndex == ACPI_NOT_PACKAGE_ELEMENT)
+-    {
+-        sprintf (MsgBuffer, "%4.4s: found %s, %s required",
+-            PredefinedName, TypeName, StringBuffer);
+-    }
+-    else
+     {
+-        sprintf (MsgBuffer, "%4.4s: found %s at index %u, %s required",
+-            PredefinedName, TypeName, PackageIndex, StringBuffer);
++        int cnt;
++	char *strp;
++
++        if (PackageIndex == ACPI_NOT_PACKAGE_ELEMENT)
++        {
++            cnt = asprintf (&strp, "%4.4s: found %s, %s required",
++                PredefinedName, TypeName, StringBuffer);
++        }
++        else
++        {
++            cnt = asprintf (&strp, "%4.4s: found %s at index %u, %s required",
++                PredefinedName, TypeName, PackageIndex, StringBuffer);
++        }
++
++	if (cnt > 0)
++	    free(strp);
++        AslError (ASL_ERROR, ASL_MSG_RESERVED_OPERAND_TYPE, Op, strp);
+     }
+ 
+-    AslError (ASL_ERROR, ASL_MSG_RESERVED_OPERAND_TYPE, Op, MsgBuffer);
+     return (AE_TYPE);
+ }
+ 
+Index: acpica-unix2-20180209/source/compiler/aslwalks.c
+===================================================================
+--- acpica-unix2-20180209.orig/source/compiler/aslwalks.c
++++ acpica-unix2-20180209/source/compiler/aslwalks.c
+@@ -507,15 +507,19 @@ AnOperandTypecheckWalkEnd (
+             else if (!CommonBtypes)
+             {
+                 /* No match -- this is a type mismatch error */
++		int cnt;
++		char *strp;
+ 
+                 AnFormatBtype (StringBuffer, ThisNodeBtype);
+                 AnFormatBtype (StringBuffer2, RequiredBtypes);
+ 
+-                sprintf (MsgBuffer, "[%s] found, %s operator requires [%s]",
++                cnt = asprintf (&strp, "[%s] found, %s operator requires [%s]",
+                     StringBuffer, OpInfo->Name, StringBuffer2);
+ 
+                 AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE,
+-                    ArgOp, MsgBuffer);
++                    ArgOp, strp);
++		if (cnt > 0)
++		    free(strp);
+             }
+ 
+         NextArgument: