Crash when shebang is not on first line

[KINFOO]

Hi,

With the following source:

    (This is blank line )
    #!/usr/bin/lua
    return

Running lua I get:

$ lua /tmp/main.lua
lua: /tmp/main.lua:2: unexpected symbol near '#'

I know provided code is not valid, but it would be nice to terminate more nicely.

But running Metalua, I get:

$ metalua /tmp/main.lua 
Cannot compile `File "/tmp/main.lua":
mlp_misc.lua:172: attempt to perform arithmetic on field 'line' (a nil value)

[KINFOO]

I fixed the bug in AST building, but there is still a bug in interacting console. It looks like it related to byte code dumping. Am I doing it wrong? Here is the trace:

$metalua /tmp/main.lua 
/usr/bin/lua: lopcodes.lua:186: attempt to perform arithmetic on local 'x' (a nil value)
stack traceback:
    lopcodes.lua:186: in function 'keep'
    lopcodes.lua:201: in function 'Instruction'
    ldump.lua:277: in function 'DumpCode'
    ldump.lua:387: in function 'DumpFunction'
    ldump.lua:359: in function 'DumpProtos'
    ldump.lua:389: in function 'DumpFunction'
    ldump.lua:411: in function 'dump'
    ldump.lua:428: in function 'dump_string'
    compiler/mlc.mlua:144: in function 'f'
    compiler/mlc.mlua:165: in function 'ast_to_luacstring'
    compiler/metalua.mlua:199: in function 'main'
    compiler/metalua.mlua:258: in main chunk
    (tail call): ?
    [C]: ?

[fab13n]

tu peux essayer avec ca dans lexer.ml?

function M.skip_initial_sharp_comment (lx) -- Dirty hack: I'm happily fondling lexer's private parts -- FIXME: redundant with lexer:newstream() lx :sync() local i = lx.src:match ("^#.-\n()", lx.i) if i then lx:sync(); self.i=i end end

On Thu, Jan 31, 2013 at 3:56 PM, Kevin KIN-FOO [email protected]:

I fixed the bug in AST building, but there is still a bug in interacting console. It looks like it related to byte code dumping. Am I doing it wrong? Here is the trace:

$metalua /tmp/main.lua /usr/bin/lua: lopcodes.lua:186: attempt to perform arithmetic on local 'x' (a nil value) stack traceback: lopcodes.lua:186: in function 'keep' lopcodes.lua:201: in function 'Instruction' ldump.lua:277: in function 'DumpCode' ldump.lua:387: in function 'DumpFunction' ldump.lua:359: in function 'DumpProtos' ldump.lua:389: in function 'DumpFunction' ldump.lua:411: in function 'dump' ldump.lua:428: in function 'dump_string' compiler/mlc.mlua:144: in function 'f' compiler/mlc.mlua:165: in function 'ast_to_luacstring' compiler/metalua.mlua:199: in function 'main' compiler/metalua.mlua:258: in main chunk (tail call): ? [C]: ?

— Reply to this email directly or view it on GitHubhttps://github.com/fab13n/metalua/issues/19#issuecomment-12945934.

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