Mask out non-version value for version comparison (#59)

* Mask out non-version value for version comparison

Fixes the indexed profile parsing

* Update changelog

Author: xd009642

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Basic MC/DC parsing in object files
 - llvm 21 into tests
 
+### Fixed
+- Non-version number flags in version field weren't masked out when using version for indexed profile parsing of causing parse errors.
+
 ## [0.8.3]
 ### Changed
 - Saturating operations on expression adding/subtracting to avoid panics

src/instrumentation_profile/indexed_profile.rs

@@ -223,28 +223,29 @@ impl InstrProfReader for IndexedInstrProf {
                     error,
                 ))
             })?;
+            let version_num = version & !VARIANT_MASKS_ALL;
             let (bytes, hash_offset) = le_u64(bytes)?;
-            let (bytes, mem_prof_offset) = if version >= 8 {
+            let (bytes, mem_prof_offset) = if version_num >= 8 {
                 let (bytes, offset) = le_u64(bytes)?;
                 (bytes, Some(offset))
             } else {
                 (bytes, None)
             };
-            let (bytes, binary_id_offset) = if version >= 9 {
+            let (bytes, binary_id_offset) = if version_num >= 9 {
                 let (bytes, offset) = le_u64(bytes)?;
                 (bytes, Some(offset))
             } else {
                 (bytes, None)
             };
 
-            let (bytes, vtable_offset) = if version >= 12 {
+            let (bytes, vtable_offset) = if version_num >= 12 {
                 let (bytes, offset) = le_u64(bytes)?;
                 (bytes, Some(offset))
             } else {
                 (bytes, None)
             };
 
-            let (bytes, temporary_prof_traces_offset) = if version >= 10 {
+            let (bytes, temporary_prof_traces_offset) = if version_num >= 10 {
                 let (bytes, offset) = le_u64(bytes)?;
                 (bytes, Some(offset))
             } else {