X10

Misleading and unhelpful error message when using 'b' as byte literal suffix

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Duplicate
  • Affects Version/s: X10 2.1.2
  • Fix Version/s: None
  • Component/s: X10 Compiler: Front-end Parser
  • Labels:
    None
  • Environment:
    Windows XP/Cygwin
  • Number of attachments :
    0

Description

The following code produces error message for the line before the actual error, which is quite misleading, because general intuition about parsers is that the first message has the most relevant information.
Besides, the error message for the actual error is not helpful.

class IncorrectByteSuffix {
    static def run() {

        assert (2u as Byte) == 2b;
    }
}

The error message (as of X10 2.1.2) is

...\IncorrectByteSuffix.x10:2: Syntax error: Token "{" expected instead of this input
...\IncorrectByteSuffix.x10:4: Syntax error: Unexpected input ignored: "ERROR_TOKEN"
2 errors.

Issue Links

duplicates

Bug - A problem which impairs or prevents the functions of the product. XTENLANG-1814 Confusion over point deconstructing syntax leads to spurious parse error

  • Major - Major loss of function.
  • Open - The issue is open and ready for the assignee to start work on it.

Bug - A problem which impairs or prevents the functions of the product. XTENLANG-1841 Spurious initial error message when method body doens't parse

  • Major - Major loss of function.
  • Open - The issue is open and ready for the assignee to start work on it.

Improvement - An improvement or enhancement to an existing feature or task. XTENLANG-2647 'instead of this input' parse errors could be better

  • Major - Major loss of function.
  • Open - The issue is open and ready for the assignee to start work on it.

Activity

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Igor Peshansky added a comment -

This is covered by XTENLANG-1814, XTENLANG-1841, and XTENLANG-2647.

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Igor Peshansky added a comment - This is covered by XTENLANG-1814 , XTENLANG-1841 , and XTENLANG-2647 .

People

  • Assignee:
    Unassigned
    Reporter:
    Salikh Zakirov
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Dates

  • Created:
    Updated:
    Resolved: