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Date: Thu, 30 Aug 2012 15:20:00 -0000
From: Andrew Haley <aph@redhat.com>
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To: Richard Henderson <rth@redhat.com>
CC: Dehao Chen <dehao@google.com>, Jason Merrill <jason@redhat.com>,        Richard Guenther <richard.guenther@gmail.com>, gcc-patches@gcc.gnu.org,        David Li <davidxl@google.com>, java@gcc.gnu.org
Subject: Re: [PATCH] Set correct source location for deallocator calls
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On 08/30/2012 03:28 PM, Richard Henderson wrote:
> On 08/17/2012 03:02 PM, Dehao Chen wrote:
>> I spend a whole day working on this, but find it very difficult to add
>> such a java test because:
>>
>> * First, libjava testsuits are all runtime tests, i.e., it compiles
>> the byte code to native code, execute it, and compares the output to
>> expected output. There is no way to scan the assembly.
>> * Though there is a way to derive the line number at runtime in java
>> (using Exception().getStackTrace()), this method only works on VM, and
>> the gcj generated native code does not get the lineno.
>>
>> Any suggestions on this?
> 
> Hmm, not from me, unfortunately.  Cc'ing the java list for clues.
> I won't hang up the main patch for this though.

Fair enough.  As Bryce said, line numbers should work if you have
addr2line installed.

Can't we scan the assembly?  Is the problem simply that the logic to
scan the assembly code isn't present in the libgcj testsuite?

Andrew.