unlzma: do emit the error message on bad input, when we exit with 1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/archival/libarchive/decompress_unlzma.c b/archival/libarchive/decompress_unlzma.c
index 42efd5aa7..446319e7b 100644
--- a/archival/libarchive/decompress_unlzma.c
+++ b/archival/libarchive/decompress_unlzma.c
@@ -498,6 +498,12 @@ unpack_lzma_stream(transformer_state_t *xstate)
                 IF_DESKTOP(total_written += buffer_pos;)
                 if (transformer_write(xstate, buffer, buffer_pos) != (ssize_t)buffer_pos) {
  bad:
+                        /* One of our users, bbunpack(), expects _us_ to emit
+                         * the error message (since it's the best place to give
+                         * potentially more detailed information).
+                         * Do not fail silently.
+                         */
+                        bb_error_msg("corrupted data");
                         total_written = -1; /* failure */
                 }
                 rc_free(rc);