From: Stefan Hajnoczi <stefanha@redhat.com>
Date: Tue, 10 Nov 2015 15:57:35 +0000 (+0000)
Subject: disas/arm: avoid clang shifting negative signed warning
X-Git-Tag: v2.5.0-rc1~12^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=02460c3b4287776062715b95c59cd8829015615d;p=thirdparty%2Fqemu.git

disas/arm: avoid clang shifting negative signed warning

clang 3.7.0 on x86_64 warns about the following:

  disas/arm.c:1782:17: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
    imm |= (-1 << 7);
            ~~ ^

Note that this patch preserves the tab indent in this source file
because the surrounding code still uses tabs.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---

diff --git a/disas/arm.c b/disas/arm.c
index 61652465396..7a7354b76a3 100644
--- a/disas/arm.c
+++ b/disas/arm.c
@@ -1779,7 +1779,7 @@ print_insn_coprocessor (bfd_vma pc, struct disassemble_info *info, long given,
 
 			/* Is ``imm'' a negative number?  */
 			if (imm & 0x40)
-			  imm |= (-1 << 7);
+			  imm |= (~0u << 7);
 
 			func (stream, "%d", imm);
 		      }