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code generator: add a return (RTS) to empty subroutines. Fixes #67

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This commit is contained in:
Irmen de Jong 2021-10-20 22:36:13 +02:00
parent 41e40cad03
commit 85956b5828
1 changed files with 6 additions and 6 deletions
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12
compiler/src/prog8/compiler/BeforeAsmGenerationAstChanger.kt
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@ -120,13 +120,13 @@ internal class BeforeAsmGenerationAstChanger(val program: Program, val errors: I
// and if an assembly block doesn't contain a rts/rti, and some other situations.
val mods = mutableListOf<IAstModification>()
val returnStmt = Return(null, subroutine.position)
if (subroutine.asmAddress == null
&& !subroutine.inline
&& subroutine.statements.isNotEmpty()
&& subroutine.amountOfRtsInAsm() == 0
if (subroutine.asmAddress == null && !subroutine.inline) {
if(subroutine.statements.isEmpty() ||
(subroutine.amountOfRtsInAsm() == 0
&& subroutine.statements.lastOrNull { it !is VarDecl } !is Return
&& subroutine.statements.last() !is Subroutine) {
mods += IAstModification.InsertLast(returnStmt, subroutine)
&& subroutine.statements.last() !is Subroutine)) {
mods += IAstModification.InsertLast(returnStmt, subroutine)
}
}
// precede a subroutine with a return to avoid falling through into the subroutine from code above it