use .sub() in BIT_initCStream

Folkert de Vries · folkertdev · commit cd6c0711bd9a · 2026-05-13T11:56:49.000+02:00
diff --git a/lib/common/bitstream.rs b/lib/common/bitstream.rs
@@ -28,10 +28,11 @@ pub(crate) unsafe fn BIT_initCStream(
     bitC.bitPos = 0;
     bitC.startPtr = startPtr as *mut core::ffi::c_char;
     bitC.ptr = bitC.startPtr;
-    bitC.endPtr = (bitC.startPtr)
+    bitC.endPtr = bitC
+        .startPtr
         .add(dstCapacity)
-        .offset(-(::core::mem::size_of::<BitContainerType>() as core::ffi::c_ulong as isize));
-    if dstCapacity <= ::core::mem::size_of::<BitContainerType>() {
+        .sub(size_of::<BitContainerType>());
+    if dstCapacity <= size_of::<BitContainerType>() {
         return Error::dstSize_tooSmall.to_error_code();
     }
     0

Original file line number	Diff line number	Diff line change
`@@ -28,10 +28,11 @@ pub(crate) unsafe fn BIT_initCStream(`
`28`	`28`	`bitC.bitPos = 0;`
`29`	`29`	`bitC.startPtr = startPtr as *mut core::ffi::c_char;`
`30`	`30`	`bitC.ptr = bitC.startPtr;`
`31`		`- bitC.endPtr = (bitC.startPtr)`
	`31`	`+ bitC.endPtr = bitC`
	`32`	`+ .startPtr`
`32`	`33`	`.add(dstCapacity)`
`33`		`- .offset(-(::core::mem::size_of::<BitContainerType>() as core::ffi::c_ulong as isize));`
`34`		`- if dstCapacity <= ::core::mem::size_of::<BitContainerType>() {`
	`34`	`+ .sub(size_of::<BitContainerType>());`
	`35`	`+ if dstCapacity <= size_of::<BitContainerType>() {`
`35`	`36`	`return Error::dstSize_tooSmall.to_error_code();`
`36`	`37`	`}`
`37`	`38`	`0`