sys-apps/sandbox: fix build failures in some compiler configurations #821433

Closes: https://bugs.gentoo.org/821433
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/sys-apps/sandbox/files/sandbox-3.1-label-decl.patch b/sys-apps/sandbox/files/sandbox-3.1-label-decl.patch
new file mode 100644
index 000000000000..b17f4b866f5a
--- /dev/null
+++ b/sys-apps/sandbox/files/sandbox-3.1-label-decl.patch
@@ -0,0 +1,41 @@
+From 82f6d876660ba1132d75ccfef5c4301d123ea505 Mon Sep 17 00:00:00 2001
+From: Mike Frysinger <vapier@gentoo.org>
+Date: Wed, 3 Nov 2021 12:25:10 -0400
+Subject: [PATCH] libsandbox: tweak label/decl code for some compiler settings
+
+Looks like gcc is inconsistent in when it chokes on this code:
+> a label can only be part of a statement and a declaration is not a statement
+
+Hoist the decl up to the top of scope to avoid the issue.
+
+Bug: https://bugs.gentoo.org/821433
+Signed-off-by: Mike Frysinger <vapier@gentoo.org>
+---
+ libsandbox/trace.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/libsandbox/trace.c b/libsandbox/trace.c
+index f3390d99822e..d2899b743048 100644
+--- a/libsandbox/trace.c
++++ b/libsandbox/trace.c
+@@ -704,6 +704,8 @@ static char *flatten_args(char *const argv[])
+ 
+ bool trace_possible(const char *filename, char *const argv[], const void *data)
+ {
++	char *args;
++
+ 	/* If YAMA ptrace_scope is very high, then we can't trace at all.  #771360 */
+ 	int yama = trace_yama_level();
+ 	if (yama >= 2) {
+@@ -721,7 +723,7 @@ bool trace_possible(const char *filename, char *const argv[], const void *data)
+ 	}
+ 
+  fail:
+-	char *args = flatten_args(argv);
++	args = flatten_args(argv);
+ 	sb_eqawarn("Unable to trace static ELF: %s: %s\n", filename, args);
+ 	free(args);
+ 	return false;
+-- 
+2.33.0
+