[PATCH] Fail if dwz fails.

[Martin Liška]

Right now, dwz return code is 0 or a small integer value (<= 3)
for situations like:

- dwz: Too few files for multifile optimization
- dwz: Multi-file optimization not allowed for different pointer sizes or endianity

These are not fatal errors and the script should continue. On the other
hand abort or segfault error values should cause failure of the script.

Let's reserve values 1-16 for a recoverable dwz exit codes.
---
 scripts/find-debuginfo.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/find-debuginfo.sh b/scripts/find-debuginfo.sh
index 3d736e0..7fb9b62 100755
--- a/scripts/find-debuginfo.sh
+++ b/scripts/find-debuginfo.sh
@@ -556,6 +556,10 @@ if $run_dwz \
       && dwz_opts="${dwz_opts} -L ${dwz_max_die_limit}"
     if type dwz >/dev/null 2>&1; then
       ( cd "${RPM_BUILD_ROOT}/usr/lib/debug" && dwz $dwz_opts ${dwz_files[@]} )
+      if [ $? -gt 16 ]; then
+        echo >&2 "*** ERROR: DWARF compression failed"
+        exit 3
+      fi
     else
       echo >&2 "*** ERROR: DWARF compression requested, but no dwz installed"
       exit 2
-- 
2.31.1