-Ycheck-all-patmat |
Check exhaustivity and redundancy of all pattern matching (used for testing the algorithm). |
-Ycheck-mods |
Check that symbols and their defining trees have modifiers in sync. |
-Ycheck-reentrant |
Check that compiled program does not contain vars that can be accessed from a global root. |
-Ycook-comments |
Cook the comments (type check @usecase, etc.) |
-Ydebug-error |
Print the stack trace when any error is caught. |
-Ydebug-flags |
Print all flags of definitions. |
-Ydebug-missing-refs |
Print a stacktrace when a required symbol is missing. |
-Ydebug-names |
Show internal representation of names. |
-Ydebug-pos |
Show full source positions including spans. |
-Ydebug-trace |
Trace core operations. |
-Ydebug-tree-with-id |
Print the stack trace when the tree with the given id is created. Default: -2147483648. |
-Ydebug-type-error |
Print the stack trace when a TypeError is caught |
-Ydetailed-stats |
Show detailed internal compiler stats (needs Stats.enabled to be set to true). |
-YdisableFlatCpCaching |
Do not cache flat classpath representation of classpath elements from jars across compiler instances. |
-Ydrop-comments |
Drop comments when scanning source files. |
-Ydump-sbt-inc |
For every compiled foo.scala, output the API representation and dependencies used for sbt incremental compilation in foo.inc, implies -Yforce-sbt-phases. |
-Yerased-terms |
Allows the use of erased terms. |
-Yexplain-lowlevel |
When explaining type errors, show types at a lower level. |
-Yexplicit-nulls |
Make reference types non-nullable. Nullable types can be expressed with unions: e.g. String|Null. |
-Yforce-sbt-phases |
Run the phases used by sbt for incremental compilation (ExtractDependencies and ExtractAPI) even if the compiler is ran outside of sbt, for debugging. |
-Yfrom-tasty-ignore-list |
List of tasty files in jar files that will not be loaded when using -from-tasty |
-Yindent-colons |
Allow colons at ends-of-lines to start indentation blocks. |
-Yinstrument |
Add instrumentation code that counts allocations and closure creations. |
-Yinstrument-defs |
Add instrumentation code that counts method calls; needs -Yinstrument to be set, too. |
-Yno-decode-stacktraces |
how raw StackOverflow stacktraces, instead of decoding them into triggering operations. |
-Yno-deep-subtypes |
Throw an exception on deep subtyping call stacks. |
-Yno-double-bindings |
Assert no namedtype is bound twice (should be enabled only if program is error-free). |
-Yno-kind-polymorphism |
Disable kind polymorphism. |
-Yno-patmat-opt |
Disable all pattern matching optimizations. |
-Yplain-printer |
Pretty-print using a plain printer. |
-Yprint-debug |
When printing trees, print some extra information useful for debugging. |
-Yprint-debug-owners |
When printing trees, print owners of definitions. |
-Yprint-pos |
Show tree positions. |
-Yprint-pos-syms |
Show symbol definitions positions. |
-Yprint-syms |
When printing trees print info in symbols instead of corresponding info in trees. |
-Yrequire-targetName |
Warn if an operator is defined without a @targetName annotation |
-Yretain-trees |
Retain trees for top-level classes, accessible from ClassSymbol#tree |
-Yscala2-unpickler |
Control where we may get Scala 2 symbols from. This is either "always", "never", or a classpath. Default: always. |
-Yshow-print-errors |
Don’t suppress exceptions thrown during tree printing. |
-Yshow-suppressed-errors |
Also show follow-on errors and warnings that are normally suppressed. |
-Yshow-tree-ids |
Uniquely tag all tree nodes in debugging output. |
-Yshow-var-bounds |
Print type variables with their bounds. |
-Ytest-pickler |
Self-test for pickling functionality; should be used with -Ystop-after:pickler. |
-Yunsound-match-types |
Use unsound match type reduction algorithm. |