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From: "mcermak at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/20281] New: probe process("")  kills stap with SIGABRT
Date: Tue, 21 Jun 2016 09:58:00 -0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: new
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X-Bugzilla-Product: systemtap
X-Bugzilla-Component: translator
X-Bugzilla-Version: unspecified
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: mcermak at redhat dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution:
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: systemtap at sourceware dot org
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D20281

            Bug ID: 20281
           Summary: probe process("")  kills stap with SIGABRT
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
          Assignee: systemtap at sourceware dot org
          Reporter: mcermak at redhat dot com
  Target Milestone: ---

Following script makes stap die with a not very user-friendly error message:

=3D=3D=3D=3D=3D=3D=3D
work #  stap -p3 -e 'probe process("").syscall { println("hey")}' -c /bin/ls
stap: ../../home/mcermak/stap/src/translate.cxx:7424: void
emit_symbol_data(systemtap_session&): Assertion `modname.length() !=3D 0' f=
ailed.
Aborted (core dumped)
work #
=3D=3D=3D=3D=3D=3D=3D

This happens at translation time at 'assert (modname.length() !=3D 0);' when
processing user modules (files).  Maybe this might get caught earlier, poss=
ibly
at elaboration time within match_node::find_and_build() (?) and a nicer err=
or
message might get returned.

--=20
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