Look at a wake write's result in the prototype, as fortified builds ask

Ubuntu's gcc defines _FORTIFY_SOURCE, which marks write's result as one
to use, and a (void) cast does not quiet it: the prototype did not
build there (research 029). Debian's does not define it; the Pi gives
the same error with -D_FORTIFY_SOURCE=3.

1 files changed, 1 insertions, 1 deletions

diff --git a/prototypes/connections/edit-tui.c b/prototypes/connections/edit-tui.c
index d7b1442..2b320ee 100644
--- a/prototypes/connections/edit-tui.c
+++ b/prototypes/connections/edit-tui.c
@@ -55,7 +55,7 @@ static void wake_signal(int signal_number) {
     else stopping = 1;
     if (wake_write >= 0) {
         const char byte = 1;
-        (void)write((int)wake_write, &byte, 1);
+        if (write((int)wake_write, &byte, 1) < 0) { /* full: its reader is woken already */ }
     }
     errno = saved_errno;
 }