ERROR::PASS1(7stap)													       ERROR::PASS1(7stap)

NAME

       error::pass1 - systemtap pass-1 errors

DESCRIPTION

       Errors  that occur during pass 1 (parsing) usually mean a basic syntax error of some sort occurred in the systemtap script.  There are sev-
       eral classes of problems possible:

       plain syntax error
	      The systemtap script parser detects a large variety of errors, such as missing operands, bad punctuation.  It  tries  to	list  what
	      kinds  of  tokens  it was expecting to see, and will show the region of the source code with the problem.  Please review the stap(1)
	      man page and/or the tutorial, to correct the script's syntax.

       grammar ambiguities
	      There is at least one known ambiguity in the systemtap grammar.  It relates to the optionality of ; (semicolon)  separators  between
	      statements, and the ++ and -- increment/decrement operators.  If the parser indicates an error, consider adding some explicit ; sep-
	      arators between nearby statements and try again.

       missing command line arguments
	      A systemtap script that uses the $N and @N constructs for substituting in command-line options may fail if not enough  options  were
	      given on the stap command line.

       compatibility changes
	      Some  versions  of systemtap have changed the language incompatibly, for example by adding the try/catch keywords for exception han-
	      dling.  In such cases, rerun systemtap with the --compatibility=VERSION option, substituting the last systemtap version  where  your
	      script was known to work.  You may also check the release-history NEWS file for compatibility changes.

GATHERING MORE INFORMATION

       Increasing the verbosity of pass-1 with an option such as --vp 1 can help pinpoint the problem.

SEE ALSO

       stap(1),
       error::reporting(7stap)

															       ERROR::PASS1(7stap)