We use dwarfsrcfiles in package.bbclass to list the source files used by a binary.
This is done before they're stripped and linked to debug symbols in separate files.
It is possible a binary may already have a link to separate debug symbols, e.g.
some of the test binaries in lttng-tools ptest. In those cases, the linked binary
may be changed by package.bbclass code whilst dwarfsrcfiles is reading it. That
would result in a rare SIGBUS race causing the binary to fail.
To avoid this, break the debug file search path so no other binaries are found.
Also fix a segfault if no binary is specified while here.
[YOCTO #14400]
(From OE-Core rev: 317e334518c6394ecba4a3fdd4ba18b185822d22)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit efef732859e265533acf16f2f4da3b29d50e0df4)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
9a4acc8ff3