7 files changed, 19 insertions, 19 deletions

diff --git a/source/components/debugger/dbinput.c b/source/components/debugger/dbinput.c
index 76d2455dc1ae..e588167dd03e 100644
--- a/source/components/debugger/dbinput.c
+++ b/source/components/debugger/dbinput.c
@@ -361,7 +361,7 @@ AcpiDbMatchCommandHelp (
 
     while ((*Command) && (*Invocation) && (*Invocation != ' '))
     {
-        if (tolower (*Command) != tolower (*Invocation))
+        if (tolower ((int) *Command) != tolower ((int) *Invocation))
         {
             return (FALSE);
         }
diff --git a/source/components/disassembler/dmopcode.c b/source/components/disassembler/dmopcode.c
index a312582e595e..60345fcaa599 100644
--- a/source/components/disassembler/dmopcode.c
+++ b/source/components/disassembler/dmopcode.c
@@ -269,10 +269,10 @@ AcpiDmPredefinedDescription (
      * Note: NameString is guaranteed to be upper case here.
      */
     LastCharIsDigit =
-        (isdigit (NameString[3]));    /* d */
+        (isdigit ((int) NameString[3]));    /* d */
     LastCharsAreHex =
-        (isxdigit (NameString[2]) &&  /* xx */
-         isxdigit (NameString[3]));
+        (isxdigit ((int) NameString[2]) &&  /* xx */
+         isxdigit ((int) NameString[3]));
 
     switch (NameString[1])
     {
diff --git a/source/components/namespace/nsdump.c b/source/components/namespace/nsdump.c
index 8e3c3ddc499e..0e692baf3f96 100644
--- a/source/components/namespace/nsdump.c
+++ b/source/components/namespace/nsdump.c
@@ -122,7 +122,7 @@ AcpiNsPrintPathname (
     {
         for (i = 0; i < 4; i++)
         {
-            isprint (Pathname[i]) ?
+            isprint ((int) Pathname[i]) ?
                 AcpiOsPrintf ("%c", Pathname[i]) :
                 AcpiOsPrintf ("?");
         }
diff --git a/source/components/namespace/nsrepair2.c b/source/components/namespace/nsrepair2.c
index e7efbae6f859..f68f8bcced32 100644
--- a/source/components/namespace/nsrepair2.c
+++ b/source/components/namespace/nsrepair2.c
@@ -637,7 +637,7 @@ AcpiNsRepair_HID (
      */
     for (Dest = NewString->String.Pointer; *Source; Dest++, Source++)
     {
-        *Dest = (char) toupper (*Source);
+        *Dest = (char) toupper ((int) *Source);
     }
 
     AcpiUtRemoveReference (ReturnObject);
diff --git a/source/components/tables/tbprint.c b/source/components/tables/tbprint.c
index 2563cec17ebb..af73279cc6ee 100644
--- a/source/components/tables/tbprint.c
+++ b/source/components/tables/tbprint.c
@@ -84,7 +84,7 @@ AcpiTbFixString (
 
     while (Length && *String)
     {
-        if (!isprint (*String))
+        if (!isprint ((int) *String))
         {
             *String = '?';
         }
diff --git a/source/components/utilities/utprint.c b/source/components/utilities/utprint.c
index 832d04fd35c2..6d7b87cd3e8a 100644
--- a/source/components/utilities/utprint.c
+++ b/source/components/utilities/utprint.c
@@ -227,7 +227,7 @@ AcpiUtScanNumber (
     UINT64                  Number = 0;
 
 
-    while (isdigit (*String))
+    while (isdigit ((int) *String))
     {
         Number *= 10;
         Number += *(String++) - '0';
@@ -505,7 +505,7 @@ AcpiUtVsnprintf (
         /* Process width */
 
         Width = -1;
-        if (isdigit (*Format))
+        if (isdigit ((int) *Format))
         {
             Format = AcpiUtScanNumber (Format, &Number);
             Width = (INT32) Number;
@@ -527,7 +527,7 @@ AcpiUtVsnprintf (
         if (*Format == '.')
         {
             ++Format;
-            if (isdigit(*Format))
+            if (isdigit ((int) *Format))
             {
                 Format = AcpiUtScanNumber (Format, &Number);
                 Precision = (INT32) Number;
diff --git a/source/components/utilities/utstring.c b/source/components/utilities/utstring.c
index 737903d334df..33060f063fec 100644
--- a/source/components/utilities/utstring.c
+++ b/source/components/utilities/utstring.c
@@ -89,7 +89,7 @@ AcpiUtStrlwr (
 
     for (String = SrcString; *String; String++)
     {
-        *String = (char) tolower (*String);
+        *String = (char) tolower ((int) *String);
     }
 
     return;
@@ -168,7 +168,7 @@ AcpiUtStrupr (
 
     for (String = SrcString; *String; String++)
     {
-        *String = (char) toupper (*String);
+        *String = (char) toupper ((int) *String);
     }
 
     return;
@@ -234,7 +234,7 @@ AcpiUtStrtoul64 (
 
     /* Skip over any white space in the buffer */
 
-    while ((*String) && (isspace (*String) || *String == '\t'))
+    while ((*String) && (isspace ((int) *String) || *String == '\t'))
     {
         String++;
     }
@@ -245,7 +245,7 @@ AcpiUtStrtoul64 (
          * Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
          * We need to determine if it is decimal or hexadecimal.
          */
-        if ((*String == '0') && (tolower (*(String + 1)) == 'x'))
+        if ((*String == '0') && (tolower ((int) *(String + 1)) == 'x'))
         {
             SignOf0x = 1;
             Base = 16;
@@ -261,7 +261,7 @@ AcpiUtStrtoul64 (
 
     /* Any string left? Check that '0x' is not followed by white space. */
 
-    if (!(*String) || isspace (*String) || *String == '\t')
+    if (!(*String) || isspace ((int) *String) || *String == '\t')
     {
         if (ToIntegerOp)
         {
@@ -283,7 +283,7 @@ AcpiUtStrtoul64 (
 
     while (*String)
     {
-        if (isdigit (*String))
+        if (isdigit ((int) *String))
         {
             /* Convert ASCII 0-9 to Decimal value */
 
@@ -297,8 +297,8 @@ AcpiUtStrtoul64 (
         }
         else
         {
-            ThisDigit = (UINT8) toupper (*String);
-            if (isxdigit ((char) ThisDigit))
+            ThisDigit = (UINT8) toupper ((int) *String);
+            if (isxdigit ((int) ThisDigit))
             {
                 /* Convert ASCII Hex char to value */
 
@@ -469,7 +469,7 @@ AcpiUtPrintString (
 
             /* Check for printable character or hex escape */
 
-            if (isprint (String[i]))
+            if (isprint ((int) String[i]))
             {
                 /* This is a normal character */