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commit 32fddb982fd61b11a2f218a115975a87ab126d43
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Author: Darren Tucker <dtucker@dtucker.net>
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Date: Mon Nov 7 10:39:01 2022 +1100
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Fix setres*id checks to work with clang-16.
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glibc has the prototypes for setresuid and setresgid behind _GNU_SOURCE,
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and clang 16 will error out on implicit function definitions, so add
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_GNU_SOURCE and the required headers to the configure checks. From
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sam at @gentoo.org via bz#3497.
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diff --git a/configure.ac b/configure.ac
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index 4bf758ac..e172540a 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -863,7 +863,8 @@ int main(void) { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
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check_for_openpty_ctty_bug=1
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dnl Target SUSv3/POSIX.1-2001 plus BSD specifics.
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dnl _DEFAULT_SOURCE is the new name for _BSD_SOURCE
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- CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_DEFAULT_SOURCE"
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+ dnl _GNU_SOURCE is needed for setres*id prototypes.
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+ CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_GNU_SOURCE"
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AC_DEFINE([BROKEN_CLOSEFROM], [1], [broken in chroots on older kernels])
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AC_DEFINE([PAM_TTY_KLUDGE], [1],
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[Work around problematic Linux PAM modules handling of PAM_TTY])
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@@ -2168,8 +2169,9 @@ AC_CHECK_FUNCS([setresuid], [
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AC_MSG_CHECKING([if setresuid seems to work])
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([[
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-#include <stdlib.h>
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#include <errno.h>
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+#include <stdlib.h>
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+#include <unistd.h>
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]], [[
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errno=0;
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setresuid(0,0,0);
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@@ -2191,8 +2193,9 @@ AC_CHECK_FUNCS([setresgid], [
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AC_MSG_CHECKING([if setresgid seems to work])
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([[
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-#include <stdlib.h>
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#include <errno.h>
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+#include <stdlib.h>
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+#include <unistd.h>
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]], [[
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errno=0;
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setresgid(0,0,0);
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