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t_sig_backtrace: Flush stdout before writing to STDOUT_FILENO. 

Avoids confusing ordering of output.
This commit is contained in:
riastradh 2023-07-06 20:44:55 +00:00
parent f7ab48a605
commit 7d87cccbb2
1 changed files with 3 additions and 2 deletions
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5
tests/lib/libexecinfo/t_sig_backtrace.c
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@ -1,4 +1,4 @@
/* $NetBSD: t_sig_backtrace.c,v 1.6 2022/07/25 22:43:01 riastradh Exp $ */
/* $NetBSD: t_sig_backtrace.c,v 1.7 2023/07/06 20:44:55 riastradh Exp $ */
/*-
* Copyright (c) 2021 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_sig_backtrace.c,v 1.6 2022/07/25 22:43:01 riastradh Exp $");
__RCSID("$NetBSD: t_sig_backtrace.c,v 1.7 2023/07/06 20:44:55 riastradh Exp $");
#include <sys/mman.h>
#include <execinfo.h>
@ -132,6 +132,7 @@ handler(int s)
ATF_REQUIRE(size != 0);
printf("Backtrace %zd stack frames.\n", size);
fflush(stdout);
backtrace_symbols_fd(array, size, STDOUT_FILENO);
char **strings = backtrace_symbols_fmt(array, size, "%n");