updpkgsums: add more error checking before replacementv4.2.0

Re-add some paranoia which was inadvertently lost with 768b65e934. In
case 'makepkg -g' fails to generate new sums (e.g. when a remote
resource cannot be fetched), or awk fails to write the new file (i have
no idea when this would happen), bail out with an error.

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/contrib/updpkgsums.sh.in b/contrib/updpkgsums.sh.in
index a40845b6..b0d2d69e 100644
--- a/contrib/updpkgsums.sh.in
+++ b/contrib/updpkgsums.sh.in
@@ -86,7 +86,7 @@ newbuildfile=$(mktemp --tmpdir updpkgsums.XXXXXX)
 # $newbuildfile as garbage in $TMPDIR. This fails silently if the replacement
 # succeeds.
 trap "rm -rf '$BUILDDIR' '$newbuildfile'" EXIT
-newsums=$(makepkg -g -p "$buildfile") &&
+newsums=$(makepkg -g -p "$buildfile") || die 'Failed to generate new checksums'
 awk -v newsums="$newsums" '
 	/^[[:blank:]]*(md|sha)[[:digit:]]+sums(_[^=]+)?=/,/\)[[:blank:]]*(#.*)?$/ {
 		if (!w) {
@@ -98,7 +98,7 @@ awk -v newsums="$newsums" '
 
 	1
 	END { if (!w) print newsums }
-' "$buildfile" > "$newbuildfile"
+' "$buildfile" > "$newbuildfile" || die 'Failed to write new PKGBUILD'
 
 # Replace the original buildfile.
 if ! mv -- "$newbuildfile" "$buildfile"; then