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bug#47596: File descriptor error when exiting emacs on android 11


From: Henrik Grimler
Subject: bug#47596: File descriptor error when exiting emacs on android 11
Date: Mon, 05 Apr 2021 11:48:50 +0200
User-agent: Evolution 3.38.4

Hi,

A better way to fix the error is to use buferr instead of stderr when
calling `close_streams` in `close_output_streams`. I cannot see any
obvious problems with this, so I propose this patch:

```

--- ./src/sysdep.c.orig 2021-04-05 09:06:33.847835653 +0000
+++ ./src/sysdep.c      2021-04-05 09:05:47.957856162 +0000
@@ -2837,8 +2837,8 @@
      sanitizer might report to stderr after this function is invoked.
*/
   bool err = buferr && (fflush (buferr) != 0 || ferror (buferr));
   if (err | (ADDRESS_SANITIZER
-            ? fflush (stderr) != 0 || ferror (stderr)
-            : close_stream (stderr) != 0))
+            ? fflush (buferr) != 0 || ferror (buferr)
+            : close_stream (buferr) != 0))
     _exit (EXIT_FAILURE);
 }
 ^L
```

With it I can start and exit emacs on android without the fdsan error. 

Best regards,
Henrik Grimler






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