commit 78df22afc540c6c34003c3cb8ecc3ee686fbef76
Author: Mark Wielaard <mark@klomp.org>
Date:   Wed Jun 28 13:25:12 2017 +0200

    find-debuginfo.sh: Filter out all <built-in> like fake file names.
    
    There is no official way to mark an instruction range as being not
    part of some actual source code, but as part of a compiler built-in
    construct in DWARF. So different compilers have come up with fake
    source file names like <built-in> or <__thread_local_inner macros>.
    We already filtered out the strings "<internal>" and "<built-in>".
    Just filter out all '(^|/)<[a-z _-]+>$'. They are fake files!
    
    This is mainly to appease the rustc compiler which generates lots of
    different variants to encode some instruction sequence is part of an
    compiler generated macro expansion.
    
    Signed-off-by: Mark Wielaard <mark@klomp.org>

diff --git a/scripts/find-debuginfo.sh b/scripts/find-debuginfo.sh
index 0233d92..555e7b8 100755
--- a/scripts/find-debuginfo.sh
+++ b/scripts/find-debuginfo.sh
@@ -502,7 +502,11 @@ if [ -s "$SOURCEFILE" ]; then
   fi
 
   mkdir -p "${RPM_BUILD_ROOT}${debug_dest_name}"
-  LC_ALL=C sort -z -u "$SOURCEFILE" | grep -E -v -z '(<internal>|<built-in>)$' |
+  # Filter out anything compiler generated which isn't a source file.
+  # e.g. <internal>, <built-in>, <__thread_local_inner macros>.
+  # Some compilers generate them as if they are part of the working
+  # directory (which is why we match against ^ or /).
+  LC_ALL=C sort -z -u "$SOURCEFILE" | grep -E -v -z '(^|/)<[a-z _-]+>$' |
   (cd "${debug_base_name}"; cpio -pd0mL "${RPM_BUILD_ROOT}${debug_dest_name}")
   # stupid cpio creates new directories in mode 0700,
   # and non-standard modes may be inherented from original directories, fixup