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.

6 files changed, 11 insertions, 0 deletions

diff --git a/src/errno/__errno_location.c b/src/errno/__errno_location.c
index 7172a1be..ad9f9241 100644
--- a/src/errno/__errno_location.c
+++ b/src/errno/__errno_location.c
@@ -1,3 +1,4 @@
+#include <errno.h>
 #include "pthread_impl.h"
 
 int *__errno_location(void)
diff --git a/src/misc/gethostid.c b/src/misc/gethostid.c
index ea65611a..25bb35db 100644
--- a/src/misc/gethostid.c
+++ b/src/misc/gethostid.c
@@ -1,3 +1,5 @@
+#include <unistd.h>
+
 long gethostid()
 {
 	return 0;
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;
diff --git a/src/stdlib/abs.c b/src/stdlib/abs.c
index 4806d629..e721fdc2 100644
--- a/src/stdlib/abs.c
+++ b/src/stdlib/abs.c
@@ -1,3 +1,5 @@
+#include <stdlib.h>
+
 int abs(int a)
 {
 	return a>0 ? a : -a;
diff --git a/src/stdlib/labs.c b/src/stdlib/labs.c
index 675b95b8..83ddb147 100644
--- a/src/stdlib/labs.c
+++ b/src/stdlib/labs.c
@@ -1,3 +1,5 @@
+#include <stdlib.h>
+
 long labs(long a)
 {
 	return a>0 ? a : -a;
diff --git a/src/stdlib/llabs.c b/src/stdlib/llabs.c
index bec4a03d..9dfaf5cf 100644
--- a/src/stdlib/llabs.c
+++ b/src/stdlib/llabs.c
@@ -1,3 +1,5 @@
+#include <stdlib.h>
+
 long long llabs(long long a)
 {
 	return a>0 ? a : -a;