Changeset 354:bcf8d9c3317d in roaraudio

Timestamp:

08/02/08 15:42:48 (16 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added integer overflow test

File:

• configure (modified) (3 diffs)

configure

@@ -4 +4 @@
 
 TF_C=testit.c
-TF_E=testit
+TF_E=./testit
 CC=cc
 
@@ -86 +86 @@
 fi
 
+echo -n 'checking for save 32 bit integer overflow... '
+
+cat > $TF_C << EOF
+#include <stdio.h>
+#include <stdint.h>
+#define TYPE uint32_t
+#define MAX  ((TYPE)4294967295U)
+
+int main (void) {
+ TYPE a = MAX;
+
+ a += 2;
+
+ if ( a == 1 ) {
+  printf("#define ROAR_HAVE_SAFE_OVERFLOW\n");
+  return 0;
+ }
+
+ return 1;
+}
+EOF
+
+if $CCTF 2> /dev/null;
+then
+ $TF_E >&3
+ if [ "$?" = '0' ]
+ then
+  echo yes
+ else
+  echo no
+ fi
+else
+ echo 'no (can not compile!, no stdint.h?)'
+fi
+
 cat >&3 << EOF
 
@@ -93 +128 @@
 EOF
 
-#rm -f $TF_C $TF_E
+rm -f $TF_C $TF_E
 
 #ll