[PATCH 5/8] perf callchains: Fix unw_word_t pointer casts

From: Arnaldo Carvalho de Melo
Date: Tue Oct 13 2015 - 15:43:35 EST


From: Rabin Vincent <rabin.vincent@xxxxxxxx>

unw_word_t is uint64_t even on 32-bit MIPS. Cast it to uintptr_t before
the cast to void *p to get rid of the following errors:

util/unwind-libunwind.c: In function 'access_mem':
util/unwind-libunwind.c:464:4: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
util/unwind-libunwind.c:475:2: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
cc1: all warnings being treated as errors
make[3]: *** [util/unwind-libunwind.o] Error 1

Signed-off-by: Rabin Vincent <rabin.vincent@xxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Rabin Vincent <rabinv@xxxxxxxx>
Link: http://lkml.kernel.org/r/1443379079-29133-1-git-send-email-rabin.vincent@xxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/unwind-libunwind.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index ea993f6c7e0c..f729f9e99f99 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -463,7 +463,7 @@ static int access_mem(unw_addr_space_t __maybe_unused as,
if (ret) {
pr_debug("unwind: access_mem %p not inside range"
" 0x%" PRIx64 "-0x%" PRIx64 "\n",
- (void *) addr, start, end);
+ (void *) (uintptr_t) addr, start, end);
*valp = 0;
return ret;
}
@@ -473,7 +473,7 @@ static int access_mem(unw_addr_space_t __maybe_unused as,
offset = addr - start;
*valp = *(unw_word_t *)&stack->data[offset];
pr_debug("unwind: access_mem addr %p val %lx, offset %d\n",
- (void *) addr, (unsigned long)*valp, offset);
+ (void *) (uintptr_t) addr, (unsigned long)*valp, offset);
return 0;
}

--
2.1.0

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