Use .assert

git-svn-id: svn://svn.cc65.org/cc65/trunk@3478 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/apple2/filedes.s

@@ -17,16 +17,12 @@ getfd:
         cmp	#MAX_FDS
         bcs	error
 
-        .if	.sizeof(FD) = 4
 
         ; Convert handle to fdtab slot
+        .assert .sizeof(FD) = 4, error
         asl
         asl
 
-        .else
-        .error	"Assertion failed"
-        .endif
-
         ; Check for fdtab slot in use
         tay
         lda	fdtab + FD::REF_NUM,y
@@ -43,7 +39,7 @@ error:  lda	#EINVAL
 
         .data
 
-fdtab:  .if	.sizeof(FD) = 4
+fdtab:  .assert .sizeof(FD) = 4, error
 
         .byte	$80		; STDIN_FILENO ::REF_NUM
         .byte	O_RDONLY	; STDIN_FILENO ::FLAGS
@@ -57,8 +53,4 @@ fdtab:  .if	.sizeof(FD) = 4
         .byte	O_WRONLY	; STDERR_FILENO::FLAGS
         .addr	$0000		; STDERR_FILENO::BUFFER
 
-        .else
-        .error	"Assertion failed"
-        .endif
-
         .res	(MAX_FDS - 3) * .sizeof(FD)