The following incorrect format specifiers and incorrect number of parameters
passed to printf like functions are reported by clang:
grant_table.c:3289:17: error: format specifies type 'unsigned short' but the
argument has type
'grant_handle_t' (aka 'unsigned int') [-Werror,-Wformat]
handle, ref, map->flags, map->domid);
^~
grant_table.c:3289:25: error: format specifies type 'unsigned short' but the
argument has type
'grant_ref_t' (aka 'unsigned int') [-Werror,-Wformat]
handle, ref, map->flags, map->domid);
^~~
mce.c:601:18: error: data argument not used by format string
[-Werror,-Wformat-extra-args]
smp_processor_id());
^
xenpm.c:102:23: error: data argument not used by format string
[-Werror,-Wformat-extra-args]
what, argv[argc > 1]);
^
libxl_internal.c:25:69: error: data argument not used by format string
[-Werror,-Wformat-extra-args]
libxl__log(ctx, XTL_CRITICAL, ENOMEM, 0,0, func, INVALID_DOMID, L);
^
libxl_internal.c:24:17: note: expanded from macro 'L'
func, (unsigned long)nmemb, (unsigned long)size
^
libxl_internal.c:26:21: error: data argument not used by format string
[-Werror,-Wformat-extra-args]
fprintf(stderr, L);
^
libxl_internal.c:24:17: note: expanded from macro 'L'
func, (unsigned long)nmemb, (unsigned long)size
^
This patch contains the fixes for them.
Signed-off-by: Roger Pau Monné
---
NB: FWIW, there's a way to disable extra arguments checks
(-Wno-format-extra-args), that would prevent us from having to apply some of
the changes here. However, given that there are not that many occurrences, I
would rather leave the full checks of Wformat enabled.
NB2: this has only been tested with a FreeBSD clang build (3.8.0), and only
against the components that build on FreeBSD (ie: no qemu-trad, and certainly
no blktap).
---
Cc: Ian Jackson
Cc: Wei Liu
Cc: Christoph Egger
Cc: Liu Jinsong
Cc: Jan Beulich
Cc: Andrew Cooper
---
tools/libxl/libxl_internal.c | 21 -
tools/misc/xenpm.c| 13 -
xen/arch/x86/cpu/mcheck/mce.c | 4 ++--
xen/common/grant_table.c | 2 +-
4 files changed, 27 insertions(+), 13 deletions(-)
diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index d288215..f492dae 100644
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -20,14 +20,25 @@
void libxl__alloc_failed(libxl_ctx *ctx, const char *func,
size_t nmemb, size_t size) {
#define M "libxl: FATAL ERROR: memory allocation failure"
-#define L (size ? M " (%s, %lu x %lu)\n" : M " (%s)\n"), \
- func, (unsigned long)nmemb, (unsigned long)size
-libxl__log(ctx, XTL_CRITICAL, ENOMEM, 0,0, func, INVALID_DOMID, L);
-fprintf(stderr, L);
+#define M_SIZE M " (%s, %lu x %lu)\n"
+#define M_NSIZE M " (%s)\n"
+if (size) {
+ libxl__log(ctx, XTL_CRITICAL, ENOMEM, 0, 0, func, INVALID_DOMID,
+ M_SIZE, func, (unsigned long)nmemb, (unsigned long)size);
+ fprintf(stderr, M_SIZE, func, (unsigned long)nmemb,
+ (unsigned long)size);
+} else {
+ libxl__log(ctx, XTL_CRITICAL, ENOMEM, 0, 0, func, INVALID_DOMID,
+ M_NSIZE, func);
+ fprintf(stderr, M_NSIZE, func);
+
+}
+
fflush(stderr);
_exit(-1);
+#undef M_NSIZE
+#undef M_SIZE
#undef M
-#undef L
}
void libxl__ptr_add(libxl__gc *gc, void *ptr)
diff --git a/tools/misc/xenpm.c b/tools/misc/xenpm.c
index a2edee5..ded40b9 100644
--- a/tools/misc/xenpm.c
+++ b/tools/misc/xenpm.c
@@ -93,13 +93,16 @@ static void parse_cpuid(const char *arg, int *cpuid)
static void parse_cpuid_and_int(int argc, char *argv[],
int *cpuid, int *val, const char *what)
{
-if ( argc > 1 )
-parse_cpuid(argv[0], cpuid);
+if ( argc == 0 )
+{
+ fprintf(stderr, "Missing %s\n", what);
+ exit(EINVAL);
+}
-if ( argc == 0 || sscanf(argv[argc > 1], "%d", val) != 1 )
+parse_cpuid(argv[0], cpuid);
+if ( sscanf(argv[1], "%d", val) != 1 )
{
-fprintf(stderr, argc ? "Invalid %s '%s'\n" : "Missing %s\n",
-what, argv[argc > 1]);
+fprintf(stderr, "Invalid %s '%s'\n", what, argv[1]);
exit(EINVAL);
}
}
diff --git a/xen/arch/x86/cpu/mcheck/mce.c b/xen/arch/x86/cpu/mcheck/mce.c
index 2695b0c..5f40e71 100644
--- a/xen/arch/x86/cpu/mcheck/mce.c
+++ b/xen/arch/x86/cpu/mcheck/mce.c
@@ -596,8 +596,8 @@ int show_mca_info(int inited, struct cpuinfo_x86 *c)
};
snprintf(prefix,