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do not call signal-unsafe function inside sighanlder - dwm - dynamic window man… |
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git clone git://git.suckless.org/dwm |
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--- |
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commit 6613d9f9a1a5630bab30bc2b70bdc793977073ee |
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parent 9bffa845faa181fb3afe05f3dc86ad79c80736be |
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Author: NRK <[email protected]> |
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Date: Thu, 14 Jul 2022 07:26:40 +0600 |
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do not call signal-unsafe function inside sighanlder |
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die() calls vprintf, fputc and exit; none of these are |
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async-signal-safe, see `man 7 signal-safety`. |
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Diffstat: |
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M dwm.c | 4 ++-- |
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1 file changed, 2 insertions(+), 2 deletions(-) |
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--- |
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diff --git a/dwm.c b/dwm.c |
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@@ -1541,6 +1541,8 @@ setup(void) |
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Atom utf8string; |
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/* clean up any zombies immediately */ |
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+ if (signal(SIGCHLD, sigchld) == SIG_ERR) |
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+ die("can't install SIGCHLD handler:"); |
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sigchld(0); |
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/* init screen */ |
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@@ -1638,8 +1640,6 @@ showhide(Client *c) |
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void |
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sigchld(int unused) |
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{ |
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- if (signal(SIGCHLD, sigchld) == SIG_ERR) |
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- die("can't install SIGCHLD handler:"); |
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while (0 < waitpid(-1, NULL, WNOHANG)); |
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} |
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