Hi Team, I have upgraded to latest fantom version 1.0.82 and found below issues in compilation.
Could you please help me how i can downgraded fantom version to 1.0.81 in Mac.
Issue I faced with Fantom 1.0.82 compilation:
I have identified a bug with the parameterised echo function. It works fine when printing a simple string message, but it fails whenever I try to print a parameter or variable value.
The same if I tried to append a variable value into any string
eg. welcome := "Hello, "+name
//Test class
class FantomTest {
static Void main() {
echo("Hello, Fantom 1.0.82 ") // works perfectly fine
You don't have a clean install. Install the zip from GitHub to a clean location and run the following to just to make sure everything is cleanly from 1.0.82:
fan -pods
If you are doing a bootstrap build of Fantom itself, then you must make sure your rel bootstrap is a clean 1.0.82 build too
Gary6 mins ago
I added some calls to the methods and tested the code - it appears to be working as expected. Tried it on several of my computers (PC's, Macs - Intel and ARM):
class FantomTest {
static Void main() {
echo("Hello, Fantom 1.0.82 ")
printData("What an elegant language!")
strAdd := testAddOperator("there! Where have you been all my life?")
echo(strAdd);
}
static Str printData(Str msg) {
echo("Received message: " + msg)
return msg
}
static Str testAddOperator(Str msg) {
Str result := "Hello, " + msg
return result
}
}
Console:
fan -version
Fantom Launcher
Copyright (c) 2006-2025, Brian Frank and Andy Frank
Licensed under the Academic Free License version 3.0
Java Runtime:
java.version: 21.0.7
java.vm.name: OpenJDK 64-Bit Server VM
java.vm.vendor: Eclipse Adoptium
java.vm.version: 21.0.7+6-LTS
java.home: C:\Program Files\Eclipse Adoptium\jdk-21.0.7.6-hotspot
fan.platform: win32-x86_64
fan.version: 1.0.82
fan.env: sys::BootEnv
fan.home: C:\fantom-1.0.82
fan main.fan
Hello, Fantom 1.0.82
Received message: What an elegant language!
Hello, there! Where have you been all my life?
Naren S Fri 4 Jul
Hi Team, I have upgraded to latest fantom version 1.0.82 and found below issues in compilation.
Could you please help me how i can downgraded fantom version to 1.0.81 in Mac.
Issue I faced with Fantom 1.0.82 compilation:
I have identified a bug with the parameterised echo function. It works fine when printing a simple string message, but it fails whenever I try to print a parameter or variable value.
The same if I tried to append a variable value into any string
eg. welcome := "Hello, "+name
//Test class
class FantomTest {
static Void main() {
echo("Hello, Fantom 1.0.82 ") // works perfectly fine}
Str printData(Str msg) {
echo("Received message: " + msg) // error caused statement return msg}
Str testAddOperator(Str msg) {
} }
and compilation error:
CompileJs ERR: Internal compiler error sys::UnknownSlotErr: sys::Method.inheritedReturnType
fan.sys.ClassType.slot (ClassType.java:104) fan.sys.FanObj.doTrap (FanObj.java:191) fan.sys.FanObj.trap (FanObj.java:187) fan.sys.Slot.trap (Slot.java:118) fan.sys.Method.trap (Method.java:99) fan.sys.FanObj.trap (FanObj.java:179) compiler::ReflectMethod.inheritedReturnType (ReflectSlot.fan:91) compiler::FPod.addMethodRef (FPod.fan:134) compiler::FPod.addMethodRef (FPod.fan) compiler::CodeAsm.addStr (CodeAsm.fan:1529) compiler::CodeAsm.shortcut (CodeAsm.fan:1367) compiler::CodeAsm.expr (CodeAsm.fan:666) compiler::CodeAsm.assignLocalVar (CodeAsm.fan:1023) compiler::CodeAsm.assign (CodeAsm.fan:1001) compiler::CodeAsm.expr (CodeAsm.fan:652) compiler::CodeAsm.localVarDefStmt (CodeAsm.fan:192) compiler::CodeAsm.stmt (CodeAsm.fan:48) compiler::CodeAsm.block (CodeAsm.fan:39) fan.sys.List.each (List.java:662) compiler::CodeAsm.block (CodeAsm.fan:39) compiler::Assembler.assembleCode (Assembler.fan:152) compiler::Assembler.assembleMethod (Assembler.fan:122) compiler::Assembler.assembleType (Assembler.fan:65) fan.sys.List.map (List.java:922) compiler::Assembler.assembleType (Assembler.fan:65) 28 More... BUILD FAILED [269ms]!
brian Fri 4 Jul
You don't have a clean install. Install the zip from GitHub to a clean location and run the following to just to make sure everything is cleanly from 1.0.82:
If you are doing a bootstrap build of Fantom itself, then you must make sure your rel bootstrap is a clean 1.0.82 build too
Gary 6 mins ago
I added some calls to the methods and tested the code - it appears to be working as expected. Tried it on several of my computers (PC's, Macs - Intel and ARM):
class FantomTest { static Void main() { echo("Hello, Fantom 1.0.82 ") printData("What an elegant language!") strAdd := testAddOperator("there! Where have you been all my life?") echo(strAdd); } static Str printData(Str msg) { echo("Received message: " + msg) return msg } static Str testAddOperator(Str msg) { Str result := "Hello, " + msg return result } }Console: