2 files changed, 4 insertions, 3 deletions
diff --git a/src/cmd/sam/sam.c b/src/cmd/sam/sam.c
index 803b84e6..b5b16a10 100644
--- a/src/cmd/sam/sam.c
+++ b/src/cmd/sam/sam.c
@@ -38,9 +38,9 @@ void	usage(void);
 extern int notify(void(*)(void*,char*));
 
 int
-main(int argc, char *argv[])
+main(int volatile argc, char **volatile argv)
 {
-	int i;
+	int volatile i;
 	String *t;
 	char **ap, **arg;
 
diff --git a/src/cmd/sam/shell.c b/src/cmd/sam/shell.c
index 2cac31bc..ee30e5d0 100644
--- a/src/cmd/sam/shell.c
+++ b/src/cmd/sam/shell.c
@@ -13,7 +13,8 @@ plan9(File *f, int type, String *s, int nest)
 {
 	long l;
 	int m;
-	int pid, fd;
+	int volatile pid;
+	int fd;
 	int retcode;
 	int pipe1[2], pipe2[2];