[Valgrind-developers] [valgrind] ppc64: Arguments to iselInt128Expr_to_32x4 should be initialized.

[Mark W. <ma...@so...>]

https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=791c0ba910f210f09646add24c34faa9ba4b162d

commit 791c0ba910f210f09646add24c34faa9ba4b162d
Author: Mark Wielaard <ma...@kl...>
Date:   Mon May 27 20:31:35 2019 +0200

    ppc64: Arguments to iselInt128Expr_to_32x4 should be initialized.
    
    Make sure to initialize the arguments to iselInt128Expr_to_32x4.
    iselInt128Expr_to_32x4 will check that iselInt128Expr_to_32x4_wrk
    has assigned the correct type of values to the arguments. But if
    the arguments were never initialized it might not be able to when
    iselInt128Expr_to_32x4_wrk was unable to assign a value.
    
    Reviewed-by: Carl Love <ce...@us...>

Diff:
---
 VEX/priv/host_ppc_isel.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/VEX/priv/host_ppc_isel.c b/VEX/priv/host_ppc_isel.c
index 68cb503..e05145c 100644
--- a/VEX/priv/host_ppc_isel.c
+++ b/VEX/priv/host_ppc_isel.c
@@ -6537,7 +6537,10 @@ static void iselStmt ( ISelEnv* env, IRStmt* stmt, IREndness IEndianess )
          return;
       }
       if (!mode64 && ty == Ity_I128) {
-         HReg r_srcHi, r_srcMedHi, r_srcMedLo, r_srcLo;
+         HReg r_srcHi    = INVALID_HREG;
+         HReg r_srcMedHi = INVALID_HREG;
+         HReg r_srcMedLo = INVALID_HREG;
+         HReg r_srcLo    = INVALID_HREG;
          HReg r_dstHi, r_dstMedHi, r_dstMedLo, r_dstLo;
 
          iselInt128Expr_to_32x4(&r_srcHi, &r_srcMedHi,