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[Bug backtrace/15032] GNU/Linux backtrace fails to use eh_frameinformation when built with --enable-64-bit-bfd
- From: "palves at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Mon, 04 Feb 2013 19:06:02 +0000
- Subject: [Bug backtrace/15032] GNU/Linux backtrace fails to use eh_frameinformation when built with --enable-64-bit-bfd
- Auto-submitted: auto-generated
- References: <bug-15032-4717@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15032
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
CC| |palves at redhat dot com
--- Comment #11 from Pedro Alves <palves at redhat dot com> 2013-02-04 19:06:02 UTC ---
The MIPS case makes things trickier since that arch has signed addresses.
However, if we're adding two 4-byte unigned integers (address and,
DW_EH_PE_udata4), overflow is usually defined as wrapping around.
If we look at this in purely an arithmetic perspective, for targets
with unsigned 32-bit addresses, I'd argue that 32-bit wrap around would
actually be correct if the result is intended to be an address. That's what
the target machine would do if presented with the same computation.
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