Need to specify UTF-8 encoding for run/t9915

[abeln]

Steps:

1. check out fresh dotty repo as per instructions in http://dotty.epfl.ch/docs/usage/getting-started.html
2. build dotty
3. run vulpix t9915

Expected:
The test passes.

This repros consistently in our lab's server, but passes in my laptop.

Actual:
It fails with

[info] Test dotty.tools.dotc.CompilationTests.runAll started
-- [E006] Unbound Identifier Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:3:14 ---------------
3 |  val c = new C_1
  |              ^^^
  |              not found: type C_1
-- Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:4:9 ------------------------------------------
4 |  assert(c.nulled == "X\u0000ABC")    // "X\000ABC"
  |         ^
  |         unspecified error
-- Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:5:9 ------------------------------------------
5 |  assert(c.supped == "????????")
  |         ^
  |         unspecified error
-- [E006] Unbound Identifier Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:7:9 ----------------
7 |  assert(C_1.NULLED == "X\u0000ABC")  // "X\000ABC"
  |         ^^^
  |         not found: C_1
-- [E006] Unbound Identifier Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:8:9 ----------------
8 |  assert(C_1.SUPPED == "????????")
  |         ^^^
  |         not found: C_1
-- [E006] Unbound Identifier Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:10:9 ---------------
10 |  assert(C_1.NULLED.size == "XYABC".size)
   |         ^^^
   |         not found: C_1
-- [E006] Unbound Identifier Error: /u4/anietoro/src/dotty/compiler/../tests/run/t9915/Test_2.scala:11:9 ---------------
11 |  assert(C_1.SUPPED.codePointCount(0, C_1.SUPPED.length) == 8)
   |         ^^^
   |         not found: C_1
    Compilation failed for: '../tests/run/t9915' 

[abeln]

Relevant chat logs:

Guillaume Martres
Could it be that the system is not in UTF-8 for some reason?
and we don't pass -encoding UTF-8 to javac, so something explodes, but isn't visible in the logs?

Abel Nieto
maybe, let me take a look
incidentally, the "compilePos" failure is fixed if i sort the input files
i'll send you a pr

Guillaume Martres
What's the output of sys.props("file.encoding") in a scala repl?

Abel Nieto
val res0: String = "ANSI_X3.4-1968"

Guillaume Martres
haha what
apparently that means ASCII
okay, so what happens when you do javac tests/run/t9915/C_1.java ?

Abel Nieto
you got it

> anietoro@plg2:~/src/dotty$ javac tests/run/t9915/C_1.java
tests/run/t9915/C_1.java:6: error: unmappable character for encoding ASCII
    public static final String SUPPED = "????????????????????????????????";
                                         ^

Guillaume Martres
nice.
So there are two bugs here:

• We need to pass -encoding UTF-8 to javac for this test
• We somehow lose the compiler messages output and it doesn't appear in the logs
  _