[Bug translator/20840] @defined($somethingundefined + 1) gives 1

[mcermak at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20840

Martin Cermak <mcermak at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #2 from Martin Cermak <mcermak at redhat dot com> ---
As of upstream commit 707712c62bb4c1 this is not an issue any more. Closing.

Details:

f45 x86_64 # stap  --poison-cache  -e 'probe
process("./a.out").function("set2") {println(@defined($x))}' -c './a.out >
/dev/null'
1
f45 x86_64 # stap  --poison-cache  -e 'probe
process("./a.out").function("set2") {println(@defined($nonexistent))}' -c
'./a.out > /dev/null'
0
f45 x86_64 # stap  --poison-cache  -e 'probe
process("./a.out").function("set2") {println(@defined($nonexistent + 1))}' -c
'./a.out > /dev/null'
WARNING: Collapsing unresolved @define to 0 [stapprobes]: operator '@defined'
at <input>:1:52
 source: probe process("./a.out").function("set2")
{println(@defined($nonexistent + 1))}
                                                            ^
0
f45 x86_64 # stap  --poison-cache -u  -e 'probe
process("./a.out").function("set2") {println(@defined($nonexistent + 1))}' -c
'./a.out > /dev/null'
WARNING: Collapsing unresolved @define to 0 [stapprobes]: operator '@defined'
at <input>:1:52
 source: probe process("./a.out").function("set2")
{println(@defined($nonexistent + 1))}
                                                            ^
0
f45 x86_64 #

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