34 lines
1.1 KiB
Plaintext
34 lines
1.1 KiB
Plaintext
Don't use printf %n.
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Index: src/emacs.c
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--- src/emacs.c.orig
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+++ src/emacs.c
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@@ -2746,21 +2746,13 @@ shut_down_emacs (int sig, Lisp_Object stuff)
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reset_all_sys_modes ();
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if (sig && sig != SIGTERM)
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{
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- static char const fmt[] = "Fatal error %d: %n%s\n";
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- char buf[max ((sizeof fmt - sizeof "%d%n%s\n"
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- + INT_STRLEN_BOUND (int) + 1),
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- min (PIPE_BUF, MAX_ALLOCA))];
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+ static char const fmt[] = "Fatal error %d: ";
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+ char buf[sizeof fmt - strlen ("%d") + INT_STRLEN_BOUND (int) + 1];
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char const *sig_desc = safe_strsignal (sig);
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- int nlen;
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- int buflen = snprintf (buf, sizeof buf, fmt, sig, &nlen, sig_desc);
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- if (0 <= buflen && buflen < sizeof buf)
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- emacs_write (STDERR_FILENO, buf, buflen);
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- else
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- {
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- emacs_write (STDERR_FILENO, buf, nlen);
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- emacs_write (STDERR_FILENO, sig_desc, strlen (sig_desc));
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- emacs_write (STDERR_FILENO, fmt + sizeof fmt - 2, 1);
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- }
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+ snprintf (buf, sizeof buf, fmt, sig);
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+ emacs_write (STDERR_FILENO, buf, strlen (buf));
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+ emacs_write (STDERR_FILENO, sig_desc, strlen (sig_desc));
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+ emacs_write (STDERR_FILENO, "\n", 1);
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}
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}
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#else
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