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Error from dwarf2cfi.c in gcc vers 7.2.0
- From: Dave Pitts <dpitts at cozx dot com>
- To: gcc at gcc dot gnu dot org
- Date: Sun, 12 Aug 2018 15:38:20 -0600
- Subject: Error from dwarf2cfi.c in gcc vers 7.2.0
All:
I've been hacking with version 7.2.0 of gcc trying to adapt some old md
files that I've got to this newer gcc. I've been getting errors from the
dwarf2out_frame_debug_expr() function in dwarf2cfi.c line 1790 calling
gcc_unreachable(). The expression being processed is a SET. The src
operand is a MEM reference and the dest operand is a REG reference. If I
run the compiler with the option -fno-asynchronous-unwind-tables I do
NOT get the error and the generated code looks reasonable.
So, my questions are:
1. Have others seen this kind of problem?
2. If so, what did you do to fix it problem?
3. Do you need more information?
I just can't seem to see what I'm doing wrong....
Thanks in advance.
--
Dave Pitts PULLMAN: Travel and sleep in safety and comfort.
dpitts@cozx.com