This error occurs when trying to compile my source code with -Yrangepos. My source depends on Slick macro I will post the usage site below, links for the Slick source and the error.

gistfile1.txt

My Source:

override def expr(n: Node, skipParens: Boolean = false) =  
n match {
  case Extract(n @ _*) =>
    val datePart = n(1).asInstanceOf[LiteralNode].value.asInstanceOf[String]
    b"""extract('${datePart}' from ${n(0)})"""
  case _ => super.expr(n, skipParens)
}

The macro in question is "b". 

StringContext and `macro`: https://github.com/slick/slick/blob/1.0/src/main/scala/scala/slick/util/MacroSupport.scala
The implementations: 
https://github.com/slick/slick/blob/1.0/src/macro/scala/scala/slick/util/MacroSupportInterpolationImpl.scala.

The exception thrown during compilation:

[debug] 
[debug] Initial source changes: 
[debug]   removed:Set()
[debug] 	added: Set(/Users/pedrofurla/dev/projects/slick-demo/experiments/src/main/scala/slickdemo/experiments/SlickSupport2.scala)
[debug] 	modified: Set()
[debug] Removed products: Set()
[debug] Modified external sources: Set()
[debug] Modified binary dependencies: Set()
[debug] Initial directly invalidated sources: Set(/Users/pedrofurla/dev/projects/slick-demo/experiments/src/main/scala/slickdemo/experiments/SlickSupport2.scala)
[debug] 
[debug] Sources indirectly invalidated by:
[debug] 	product: Set()
[debug] 	binary dep: Set()
[debug] 	external source: Set()
[debug] Initially invalidated: Set(/Users/pedrofurla/dev/projects/slick-demo/experiments/src/main/scala/slickdemo/experiments/SlickSupport2.scala)
[debug] Recompiling all 1 sources: invalidated sources (1) exceeded 50.0% of all sources
[info] Compiling 1 Scala source to /Users/pedrofurla/dev/projects/slick-demo/experiments/target/scala-2.10/classes...
[debug] Running cached compiler 4e0175be, interfacing (CompilerInterface) with Scala compiler version 2.10.2
[debug] Calling Scala compiler with arguments  (CompilerInterface):
[debug] 	-deprecation
[debug] 	-feature
[debug] 	-Yrangepos
[debug] 	-d
[debug] 	/Users/pedrofurla/dev/projects/slick-demo/experiments/target/scala-2.10/classes
[debug] 	-bootclasspath
[debug] 	/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/JObjC.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/classes:/Users/pedrofurla/.sbt/boot/scala-2.10.2/lib/scala-library.jar
[debug] 	-classpath
[debug] 	/Users/pedrofurla/dev/projects/slick-demo/experiments/target/scala-2.10/classes:/Users/pedrofurla/dev/projects/slick-demo/target/scala-2.10/classes:/Users/pedrofurla/dev/projects/slick-demo/macros/target/scala-2.10/classes:/Users/pedrofurla/.ivy2/cache/org.scala-lang/scala-reflect/jars/scala-reflect-2.10.2.jar:/Users/pedrofurla/.ivy2/cache/com.typesafe.slick/slick_2.10/jars/slick_2.10-1.0.1.jar:/Users/pedrofurla/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.4.jar:/Users/pedrofurla/.ivy2/cache/org.slf4j/slf4j-nop/jars/slf4j-nop-1.6.4.jar:/Users/pedrofurla/.ivy2/cache/joda-time/joda-time/jars/joda-time-2.2.jar:/Users/pedrofurla/.ivy2/cache/org.joda/joda-convert/jars/joda-convert-1.3.1.jar:/Users/pedrofurla/.ivy2/cache/com.h2database/h2/jars/h2-1.3.172.jar:/Users/pedrofurla/.ivy2/cache/mysql/mysql-connector-java/jars/mysql-connector-java-5.1.12.jar:/Users/pedrofurla/.ivy2/cache/org.xerial/sqlite-jdbc/jars/sqlite-jdbc-3.7.2.jar
[info] ======= Position error
[info] Synthetic tree [937] contains nonsynthetic tree [134]
[info] == Enclosing tree [937] of type Apply at [2183]SlickSupport2.scala
[info] 
[info] [L  62        ] #937    [2183]          Apply      // Apply(method +=)
[info] 
[info] == Enclosed tree [134] of type Ident at [2198:2206]SlickSupport2.scala
[info] 
[info] [L  62        ] #134    [2198:2206]     Ident      // datePart}
[info] 
[info] 
[info] While validating #1563
[info] [L   1        ] #1563   [0:3341]        PackageDef // experiments
[info] 
[info] Children:
[info]   [L   1 P# 1563] #44     [8:29]          Select     // experiments
[info]   [L   3 P# 1563] #47     [31:53]         Import     // slickdemo.dal._
[info]   [L   4 P# 1563] #51     [54:151]        Import     // scala.slick.driver.{BasicDriver, BasicStatementBuilderComponent, ExtendedDriver, H2Driver}
[info]   [L   5 P# 1563] #54     [152:193]       Import     // scala.language.implicitConversions
[info]   [L   6 P# 1563] #57     [194:219]       Import     // scala.slick.driver
[info]   [L  14 P# 1563] #1562   [313:3341]      ModuleDef  // SlickSupport2 extends SlickSupport {
[info] =======
[error] 
[error]      while compiling: /Users/pedrofurla/dev/projects/slick-demo/experiments/src/main/scala/slickdemo/experiments/SlickSupport2.scala
[error]         during phase: typer
[error]      library version: version 2.10.2
[error]     compiler version: version 2.10.2
[error]   reconstructed args: -bootclasspath /Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/lib/JObjC.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_07.jdk/Contents/Home/jre/classes:/Users/pedrofurla/.sbt/boot/scala-2.10.2/lib/scala-library.jar -deprecation -Yrangepos -feature -d /Users/pedrofurla/dev/projects/slick-demo/experiments/target/scala-2.10/classes -classpath /Users/pedrofurla/dev/projects/slick-demo/experiments/target/scala-2.10/classes:/Users/pedrofurla/dev/projects/slick-demo/target/scala-2.10/classes:/Users/pedrofurla/dev/projects/slick-demo/macros/target/scala-2.10/classes:/Users/pedrofurla/.ivy2/cache/org.scala-lang/scala-reflect/jars/scala-reflect-2.10.2.jar:/Users/pedrofurla/.ivy2/cache/com.typesafe.slick/slick_2.10/jars/slick_2.10-1.0.1.jar:/Users/pedrofurla/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.6.4.jar:/Users/pedrofurla/.ivy2/cache/org.slf4j/slf4j-nop/jars/slf4j-nop-1.6.4.jar:/Users/pedrofurla/.ivy2/cache/joda-time/joda-time/jars/joda-time-2.2.jar:/Users/pedrofurla/.ivy2/cache/org.joda/joda-convert/jars/joda-convert-1.3.1.jar:/Users/pedrofurla/.ivy2/cache/com.h2database/h2/jars/h2-1.3.172.jar:/Users/pedrofurla/.ivy2/cache/mysql/mysql-connector-java/jars/mysql-connector-java-5.1.12.jar:/Users/pedrofurla/.ivy2/cache/org.xerial/sqlite-jdbc/jars/sqlite-jdbc-3.7.2.jar
[error] 
[error]   last tree to typer: Literal(Constant(()))
[error]               symbol: null
[error]    symbol definition: null
[error]                  tpe: Unit
[error]        symbol owners: 
[error]       context owners: constructor DateColumnExtensionMethods -> object DateColumnExtensionMethods -> object SlickSupport2 -> package experiments
[error] 
[error] == Enclosing template or block ==
[error] 
[error] Apply( // def <init>(): Object in class Object, tree.tpe=Object
[error]   DateColumnExtensionMethods.super."<init>" // def <init>(): Object in class Object, tree.tpe=()Object
[error]   Nil
[error] )
[error] 
[error] == Expanded type of tree ==
[error] 
[error] TypeRef(TypeSymbol(final abstract class Unit extends AnyVal))
[error] 
[error] uncaught exception during compilation: scala.tools.nsc.interactive.RangePositions$ValidateException
scala.tools.nsc.interactive.RangePositions$ValidateException: Synthetic tree [937] contains nonsynthetic tree [134]
	at scala.tools.nsc.interactive.RangePositions$class.positionError$1(RangePositions.scala:201)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:218)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validate$1(RangePositions.scala:241)
	at scala.tools.nsc.interactive.RangePositions$class.validatePositions(RangePositions.scala:246)
	at xsbt.CachedCompiler0$$anon$1.validatePositions(CompilerInterface.scala:118)
	at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.apply(Analyzer.scala:100)
	at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:464)
	at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:91)
	at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:91)
	at scala.collection.Iterator$class.foreach(Iterator.scala:727)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
	at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.run(Analyzer.scala:91)
	at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1583)
	at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1557)
	at scala.tools.nsc.Global$Run.compileSources(Global.scala:1553)
	at scala.tools.nsc.Global$Run.compile(Global.scala:1662)
	at xsbt.CachedCompiler0.run(CompilerInterface.scala:90)
	at xsbt.CachedCompiler0.run(CompilerInterface.scala:72)
	at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:73)
	at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:35)
	at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:29)
	at sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileScala$1$1.apply$mcV$sp(AggressiveCompile.scala:71)
	at sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:71)
	at sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:71)
	at sbt.compiler.AggressiveCompile.sbt$compiler$AggressiveCompile$$timed(AggressiveCompile.scala:101)
	at sbt.compiler.AggressiveCompile$$anonfun$4.compileScala$1(AggressiveCompile.scala:70)
	at sbt.compiler.AggressiveCompile$$anonfun$4.apply(AggressiveCompile.scala:88)
	at sbt.compiler.AggressiveCompile$$anonfun$4.apply(AggressiveCompile.scala:60)
	at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:24)
	at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:22)
	at sbt.inc.Incremental$.cycle(Incremental.scala:45)
	at sbt.inc.Incremental$.compile(Incremental.scala:29)
	at sbt.inc.IncrementalCompile$.apply(Compile.scala:20)
	at sbt.compiler.AggressiveCompile.compile2(AggressiveCompile.scala:96)
	at sbt.compiler.AggressiveCompile.compile1(AggressiveCompile.scala:44)
	at sbt.compiler.AggressiveCompile.apply(AggressiveCompile.scala:31)
	at sbt.Compiler$.apply(Compiler.scala:79)
	at sbt.Defaults$$anonfun$compileTask$1.apply(Defaults.scala:572)
	at sbt.Defaults$$anonfun$compileTask$1.apply(Defaults.scala:572)
	at sbt.Scoped$$anonfun$hf2$1.apply(Structure.scala:578)
	at sbt.Scoped$$anonfun$hf2$1.apply(Structure.scala:578)
	at scala.Function1$$anonfun$compose$1.apply(Function1.scala:49)
	at sbt.Scoped$Reduced$$anonfun$combine$1$$anonfun$apply$12.apply(Structure.scala:311)
	at sbt.Scoped$Reduced$$anonfun$combine$1$$anonfun$apply$12.apply(Structure.scala:311)
	at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:41)
	at sbt.std.Transform$$anon$5.work(System.scala:71)
	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:232)
	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:232)
	at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
	at sbt.Execute.work(Execute.scala:238)
	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:232)
	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:232)
	at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
	at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)