git: ce10852cb3a0 - stable/13 - tools/test/upsdl: fix compiler warnings

The branch stable/13 has been updated by asomers:

URL: https://cgit.FreeBSD.org/src/commit/?id=ce10852cb3a03a1233cff0a54b2d1c67d16d1ee6

commit ce10852cb3a03a1233cff0a54b2d1c67d16d1ee6
Author:     Alan Somers <asomers@FreeBSD.org>
AuthorDate: 2021-09-14 20:50:01 +0000
Commit:     Alan Somers <asomers@FreeBSD.org>
CommitDate: 2021-10-07 21:41:47 +0000

    tools/test/upsdl: fix compiler warnings
    
    Sponsored by:   Axcient
    
    (cherry picked from commit 5dc5f849be9047309d32c4df8e7ee617c27ec43f)
---
 tools/test/upsdl/upsdl.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/tools/test/upsdl/upsdl.c b/tools/test/upsdl/upsdl.c
index fc4a761e450b..960b034ffcfe 100644
--- a/tools/test/upsdl/upsdl.c
+++ b/tools/test/upsdl/upsdl.c
@@ -32,20 +32,21 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/mman.h>
 
 
-int prepareFile(char* filename,int* fdp);
+int prepareFile(const char* filename,int* fdp);
 int mapBuffer(char** bufferp,int fd1,int fd2);
 int startIO(int fd,char *buffer);
 
-int pagesize;
+static int pagesize;
 
 #define FILESIZE (32*1024)
-char wbuffer[FILESIZE];
+static char wbuffer[FILESIZE];
 
 /* Create a FILESIZE sized file - then remove file data from the cache*/
-int prepareFile(char* filename,int* fdp)
+int prepareFile(const char* filename,int* fdp)
 {
   int fd;
   int len;
@@ -134,7 +135,7 @@ int startIO(int fd,char *buffer)
 }
 
 
-int main(int argc,char *argv[],char *envp[])
+int main(int argc __unused, char *argv[] __unused)
 {
 
   int fdA,fdB,fdDelayA,fdDelayB;