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Subject: GDB <MULTIPLE> breakpoints, source lines
From: Peter Wainwright <peter.wainwright@ieee.org>
To: gdb@sourceware.org
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Date: Sat, 14 Feb 2009 09:29:00 -0000
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Hi,

I'm the maintainer of DDD.  I have some questions about the intent of
the gdb <MULTIPLE> breakpoints.

"info break" returns several lines for each breakpoint, e.g.

2.1                         y     0x00007f2e2090c4d4 in
VoxelBuffer<char>::buffer_type() const
                                               at ../VoxelBuffer.cc:95
2.2                         y     0x00007f2e2090c540 in
VoxelBuffer<unsigned char>::buffer_type() const at ../VoxelBuffer.cc:95
2.3                         y     0x00007f2e2090c5ac in
VoxelBuffer<short>::buffer_type() const
                                               at ../VoxelBuffer.cc:95

The info page on breakpoints mentions 3 use cases: constructors,
templates, and inlined functions.  In all 3 cases the multiple locations
are generated from a single source line.  However, the "info break"
display shows a source file and line number for each location.

My question is: are there any circumstances in which you can get a
different source file or line for each location?


Thanks,

Peter Wainwright