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File gcc10-fixes.patch of Package xen

References: bsc#1158414

For libxlu_pci.c
libxlu_pci.c: In function 'xlu_pci_parse_bdf':
libxlu_pci.c:32:18: error: 'func' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   32 |     pcidev->func = func;
      |     ~~~~~~~~~~~~~^~~~~~
libxlu_pci.c:51:29: note: 'func' was declared here
   51 |     unsigned dom, bus, dev, func, vslot = 0;
      |                             ^~~~
libxlu_pci.c:31:17: error: 'dev' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   31 |     pcidev->dev = dev;
      |     ~~~~~~~~~~~~^~~~~
libxlu_pci.c:51:24: note: 'dev' was declared here
   51 |     unsigned dom, bus, dev, func, vslot = 0;
      |                        ^~~
libxlu_pci.c:30:17: error: 'bus' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   30 |     pcidev->bus = bus;
      |     ~~~~~~~~~~~~^~~~~
libxlu_pci.c:51:19: note: 'bus' was declared here
   51 |     unsigned dom, bus, dev, func, vslot = 0;
      |                   ^~~
libxlu_pci.c:29:20: error: 'dom' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   29 |     pcidev->domain = domain;
      |     ~~~~~~~~~~~~~~~^~~~~~~~
libxlu_pci.c:51:14: note: 'dom' was declared here
   51 |     unsigned dom, bus, dev, func, vslot = 0;
      |              ^~~

For kdd.c
kdd.c: In function 'kdd_tx':
kdd.c:408:30: error: array subscript 65534 is outside the bounds of an interior zero-length array 'uint8_t[0]' {aka 'unsigned char[0]'} [-Werror=zero-length-bounds]
  408 |         sum += s->txp.payload[i];
      |                ~~~~~~~~~~~~~~^~~
In file included from kdd.c:52:
kdd.h:326:17: note: while referencing 'payload'
  326 |         uint8_t payload[0];
      |                 ^~~~~~~
cc1: all warnings being treated as errors

For ssl_tls.c
ssl_tls.c: In function 'ssl_session_reset':
ssl_tls.c:1778:5: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
 1778 |     memset( ssl->ctx_enc, 0, 128 );
      |     ^~~~~~
ssl_tls.c:1779:5: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
 1779 |     memset( ssl->ctx_dec, 0, 128 );
      |     ^~~~~~
ssl_tls.c: In function 'ssl_encrypt_buf':
ssl_tls.c:633:68: warning: this statement may fall through [-Wimplicit-fallthrough=]
  633 |              ssl->session->ciphersuite == SSL_RSA_CAMELLIA_256_SHA ||
ssl_tls.c:643:13: note: here
  643 |             default:
      |             ^~~~~~~
ssl_tls.c: In function 'ssl_decrypt_buf':
ssl_tls.c:738:68: warning: this statement may fall through [-Wimplicit-fallthrough=]
  738 |              ssl->session->ciphersuite == SSL_RSA_CAMELLIA_256_SHA ||
ssl_tls.c:748:13: note: here
  748 |             default:
      |             ^~~~~~~

For xenstored_core.h
ld: /home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/xenstored.a(xenstored_watch.o):/home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/xenstored_core.h:207: multiple definition of `xgt_handle'; /home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/xenstored.a(xenstored_core.o):/home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/xenstored_core.h:207: first defined here

For utils.h
ld: /home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/xenstored.a(xenstored_watch.o):/home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/utils.h:27: multiple definition of `xprintf'; /home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/xenstored.a(xenstored_core.o):/home/abuild/rpmbuild/BUILD/xen-4.13.0-testing/stubdom/xenstore/utils.h:27: first defined here

for libxl_utils.h
specified bound 108 equals destination size [-Werror=stringop-truncation]

xenpmd.c: In function 'get_next_battery_file':
xenpmd.c:92:37: error: '%s' directive output may be truncated writing between 4 and 2147483645 bytes into a region of size 271 [-Werror=format-truncation=]
   92 |     #define BATTERY_STATE_FILE_PATH "/tmp/battery/%s/state"
      |                                     ^~~~~~~~~~~~~~~~~~~~~~~
xenpmd.c:117:52: note: in expansion of macro 'BATTERY_STATE_FILE_PATH'
  117 |             snprintf(file_name, sizeof(file_name), BATTERY_STATE_FILE_PATH,
      |                                                    ^~~~~~~~~~~~~~~~~~~~~~~

Index: xen-4.13.0-testing/tools/libxl/libxlu_pci.c
===================================================================
--- xen-4.13.0-testing.orig/tools/libxl/libxlu_pci.c
+++ xen-4.13.0-testing/tools/libxl/libxlu_pci.c
@@ -22,6 +22,9 @@ static int hex_convert(const char *str,
     return 0;
 }
 
+#if __GNUC__ >= 10
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
 static int pcidev_struct_fill(libxl_device_pci *pcidev, unsigned int domain,
                                unsigned int bus, unsigned int dev,
                                unsigned int func, unsigned int vdevfn)
Index: xen-4.13.0-testing/tools/debugger/kdd/kdd.c
===================================================================
--- xen-4.13.0-testing.orig/tools/debugger/kdd/kdd.c
+++ xen-4.13.0-testing/tools/debugger/kdd/kdd.c
@@ -396,6 +396,9 @@ static void find_os(kdd_state *s)
  */
 
 
+#if __GNUC__ >= 10
+#pragma GCC diagnostic ignored "-Wzero-length-bounds"
+#endif
 /* Send a serial packet */
 static void kdd_tx(kdd_state *s)
 {
Index: xen-4.13.0-testing/stubdom/polarssl.patch
===================================================================
--- xen-4.13.0-testing.orig/stubdom/polarssl.patch
+++ xen-4.13.0-testing/stubdom/polarssl.patch
@@ -62,3 +62,25 @@ diff -Naur polarssl-1.1.4/library/bignum
              t_udbl r;
 
              r  = (t_udbl) X.p[i] << biL;
+--- polarssl-1.1.4/library/ssl_tls.c.orig	2012-05-30 01:39:36.000000000 -0600
++++ polarssl-1.1.4/library/ssl_tls.c	2020-03-10 10:17:26.270755351 -0600
+@@ -487,6 +487,9 @@ static void ssl_mac_sha1( unsigned char
+     sha1_finish( &sha1, buf + len );
+ }
+
++#if __GNUC__ >= 10
++#pragma GCC diagnostic ignored "-Wimplicit-fallthrough="
++#endif
+ /*
+  * Encryption/decryption functions
+  */
+@@ -1739,6 +1742,9 @@ int ssl_init( ssl_context *ssl )
+     return( 0 );
+ }
+
++#if __GNUC__ >= 10
++#pragma GCC diagnostic ignored "-Wmemset-elt-size"
++#endif
+ /*
+  * Reset an initialized and used SSL context for re-use while retaining
+  * all application-set variables, function pointers and data.
Index: xen-4.13.0-testing/tools/xenstore/xenstored_core.h
===================================================================
--- xen-4.13.0-testing.orig/tools/xenstore/xenstored_core.h
+++ xen-4.13.0-testing/tools/xenstore/xenstored_core.h
@@ -204,7 +204,11 @@ void finish_daemonize(void);
 /* Open a pipe for signal handling */
 void init_pipe(int reopen_log_pipe[2]);
 
+#if __GNUC__ >= 10
+extern xengnttab_handle **xgt_handle;
+#else
 xengnttab_handle **xgt_handle;
+#endif
 
 int remember_string(struct hashtable *hash, const char *str);
 
Index: xen-4.13.0-testing/tools/xenstore/utils.h
===================================================================
--- xen-4.13.0-testing.orig/tools/xenstore/utils.h
+++ xen-4.13.0-testing/tools/xenstore/utils.h
@@ -24,7 +24,11 @@ static inline bool strends(const char *a
 void barf(const char *fmt, ...) __attribute__((noreturn));
 void barf_perror(const char *fmt, ...) __attribute__((noreturn));
 
+#if __GNUC__ >= 10
+extern void (*xprintf)(const char *fmt, ...);
+#else
 void (*xprintf)(const char *fmt, ...);
+#endif
 
 #define eprintf(_fmt, _args...) xprintf("[ERR] %s" _fmt, __FUNCTION__, ##_args)
 
Index: xen-4.13.0-testing/tools/libxl/libxl_utils.c
===================================================================
--- xen-4.13.0-testing.orig/tools/libxl/libxl_utils.c
+++ xen-4.13.0-testing/tools/libxl/libxl_utils.c
@@ -1248,6 +1248,9 @@ int libxl__random_bytes(libxl__gc *gc, u
     return ret;
 }
 
+#if __GNUC__ >= 10
+#pragma GCC diagnostic ignored "-Wstringop-truncation"
+#endif
 int libxl__prepare_sockaddr_un(libxl__gc *gc,
                                struct sockaddr_un *un, const char *path,
                                const char *what)
Index: xen-4.13.0-testing/tools/xenpmd/xenpmd.c
===================================================================
--- xen-4.13.0-testing.orig/tools/xenpmd/xenpmd.c
+++ xen-4.13.0-testing/tools/xenpmd/xenpmd.c
@@ -86,6 +86,9 @@ struct battery_status {
 
 static struct xs_handle *xs;
 
+#if __GNUC__ >= 10
+#pragma GCC diagnostic ignored "-Wformat-truncation"
+#endif
 #ifdef RUN_IN_SIMULATE_MODE
     #define BATTERY_DIR_PATH "/tmp/battery"
     #define BATTERY_INFO_FILE_PATH "/tmp/battery/%s/info"

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File gcc10-fixes.patch of Package xen

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