[lldb-dev] issue with lldb-mi -var-update with pointers

[Ted Woodward via lldb-dev]

I have a simple testcase that modifies the value pointed to by an int *.
I've created a variable with -var-create, and then after the value has been
updated, check it with -var-update. -var-update returns no changes, but the
value has changed.

test.c:
#include 

int main(void)
{
  int vec[] = {1, 2, 3, 4};
  int foo = 0;
  int *bar = 
  int i = 0;

  for (i = 0; i < 4; i++)
*bar += vec[i];

  return foo;
}

Commands:
-break-insert -t -f test.c:10
-break-insert -t -f test.c:13
-exec-run
-var-create --thread 1 --frame 0 - * bar
-var-list-children var0
-var-evaluate-expression var0.*bar
-exec-continue
-var-update 1 var0
-var-evaluate-expression var0.*bar


Output:
(gdb)
-var-create --thread 1 --frame 0 - * bar
^done,name="var0",numchild="1",value="0x7fffed30",type="int
*",thread-id="1",has_more="0"
(gdb)
-var-list-children var0
^done,numchild="1",children=[child={name="var0.*bar",exp="*bar",numchild="0"
,type="int",thread-id="1",has_more="0"}],has_more="0"
(gdb)
-var-evaluate-expression var0.*bar
^done,value="0"

***Value is 0

(gdb)
-exec-continue
^running
(gdb)
=thread-exited,id="1",group-id="i1"
(gdb)
*running,thread-id="all"
(gdb)
=thread-created,id="1",group-id="i1"
(gdb)
*stopped,reason="breakpoint-hit",disp="del",bkptno="2",frame={level="0",addr
="0x00400530",func="main",args=[],file="test.c",fullname="/local/scr
atch/ted/tip/newfull/test.c",line="13"},thread-id="1",stopped-threads="all"
(gdb)
-var-update 1 var0
^done,changelist=[]

***No changes

(gdb)
-var-evaluate-expression var0.*bar
^done,value="10"

***Value is 10, even though we reported no changes.

The child shows an update:
(gdb)
-var-update 1 var0.*bar
^done,changelist=[{name="var0.*bar",value="10",in_scope="true",type_changed=
"false",has_more="0"}]


--
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a
Linux Foundation Collaborative Project


___
lldb-dev mailing list
lldb-dev@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev

Re: [lldb-dev] Building lldb in Mac os

[René J . V . Bertin via lldb-dev]

On Tuesday May 30 2017 11:07:10 Laghzaoui Mohammed via lldb-dev wrote:
>when i try to build LLDB in xcode , i get this error:
>"The specified item could not be found in the keychain"

Did you follow the instructions on how to set up your build environment and in 
particular on how to generate (or obtain) a signing key?

R.
___
lldb-dev mailing list
lldb-dev@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev

[lldb-dev] LLVM Social - Paris: June 14th, 2017

[Arnaud Allard de Grandmaison via lldb-dev]

The next LLVM social in Paris will happen on June 14th, 2017.

Everyone interested in LLVM, Clang, lldb, Polly, lld, ... is invited to
join.

Event details, including registration (free but mandatory) at
http://www.meetup.com/LLVM-Clang-social

This edition will be particularly busy (and interesting !) as we are
delighted to welcome 3 guest speakers:

   - Hal Finkel (Argonne National Laboratory) will present a shortened and
   updated version of his EuroLLVM'17 keynote "*Exascale computing, LLVM,
   and representations of parallelism*". He will also present the work he
   has done on a type sanitizer.
   - David Chisnall (Cambridge University) will talk about "*Targeting
   architectures where pointers are not integers with LLVM*".
   - Tobias Grosser (ETH Zürich) will present the "*Efforts to make Polly
   production quality*".

Looking forward to meet you,
-- Arnaud de Grandmaison, Duncan Sands, Sylvestre Ledru
___
lldb-dev mailing list
lldb-dev@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev