[PATCH] ARC: unwind: Mark expected switch fall-through
From: Gustavo A. R. Silva
Date: Tue Aug 20 2019 - 21:29:13 EST
Mark switch cases where we are expecting to fall through.
This patch fixes the following warnings (Building: haps_hs_defconfig arc):
arch/arc/kernel/unwind.c: In function âread_pointerâ:
./include/linux/compiler.h:328:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
do { \
^
./include/linux/compiler.h:338:2: note: in expansion of macro â__compiletime_assertâ
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~~~~~~~~~~~~
./include/linux/compiler.h:350:2: note: in expansion of macro â_compiletime_assertâ
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^~~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:39:37: note: in expansion of macro âcompiletime_assertâ
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:50:2: note: in expansion of macro âBUILD_BUG_ON_MSGâ
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^~~~~~~~~~~~~~~~
arch/arc/kernel/unwind.c:573:3: note: in expansion of macro âBUILD_BUG_ONâ
BUILD_BUG_ON(sizeof(u32) != sizeof(value));
^~~~~~~~~~~~
arch/arc/kernel/unwind.c:575:2: note: here
case DW_EH_PE_native:
^~~~
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
arch/arc/kernel/unwind.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c
index 445e4d702f43..dc05a63516f5 100644
--- a/arch/arc/kernel/unwind.c
+++ b/arch/arc/kernel/unwind.c
@@ -572,6 +572,7 @@ static unsigned long read_pointer(const u8 **pLoc, const void *end,
#else
BUILD_BUG_ON(sizeof(u32) != sizeof(value));
#endif
+ /* Fall through */
case DW_EH_PE_native:
if (end < (const void *)(ptr.pul + 1))
return 0;
--
2.23.0