Gcc helpfully points out that we're accessing past the end of the gprs
array:
tm-signal-msr-resv.c: In function 'signal_usr1':
tm-signal-msr-resv.c:43:37: error: array subscript is above array bounds
[-Werror=array-bounds]
ucp->uc_mcontext.regs->gpr[PT_MSR] |= (7ULL);
We haven't noticed previously because -flto was hiding it somehow.
The code is confused, PT_MSR isn't a gpr, instead it's in
uc_regs->gregs, so fix it.
Signed-off-by: Michael Ellerman <[email protected]>
---
tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
b/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
index d86653f282b1..8c54d18b3e9a 100644
--- a/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-msr-resv.c
@@ -40,7 +40,7 @@ void signal_usr1(int signum, siginfo_t *info, void *uc)
#ifdef __powerpc64__
ucp->uc_mcontext.gp_regs[PT_MSR] |= (7ULL << 32);
#else
- ucp->uc_mcontext.regs->gpr[PT_MSR] |= (7ULL);
+ ucp->uc_mcontext.uc_regs->gregs[PT_MSR] |= (7ULL);
#endif
/* Should segv on return becuase of invalid context */
segv_expected = 1;
--
2.5.0
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