add public interface headers to implementation files

general policy is that all source files defining a public API or an
ABI mechanism referenced by a public header should include the public
header that declares the interface, so that the compiler or analysis
tools can check the consistency of the declarations. Alexander Monakov
pointed out a number of violations of this principle a few years back.
fix them now.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/signal/sigrtmin.c b/src/signal/sigrtmin.c
index d0e769bb..c5a1fd92 100644
--- a/src/signal/sigrtmin.c
+++ b/src/signal/sigrtmin.c
@@ -1,3 +1,5 @@
+#include <signal.h>
+
 int __libc_current_sigrtmin()
 {
 	return 35;