notcurses_render(): propagate result of write(2)

5 years ago · ad7a517ec8
parent 7f9ac490b0
commit ad7a517ec8
1 changed files with 4 additions and 1 deletions
--- a/src/lib/notcurses.c
+++ b/src/lib/notcurses.c
@ -998,7 +998,10 @@ int notcurses_render(notcurses* nc){
  }
  ret |= fclose(out);
  fflush(nc->ttyfp);
-  write(nc->ttyfd, buf, buflen);
+  ssize_t w = write(nc->ttyfd, buf, buflen);
+  if(w < 0 || (size_t)w != buflen){
+    ret = -1;
+  }
 // fprintf(stderr, "%s\n", buf);
  clock_gettime(CLOCK_MONOTONIC, &done);
  free(buf);