dump.c: Postcond that we actually read something

1 files changed, 2 insertions, 0 deletions

diff --git a/src/dump.c b/src/dump.c
index ef83b34..8af7119 100644
--- a/src/dump.c
+++ b/src/dump.c
@@ -582,6 +582,8 @@ noop:
                   decl->buf.written += decl->size * read;
                   decl->nmemb = read;
                }
+
+               assert(decl->nmemb != 0);
             }
             break;