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| author | Peter Collingbourne <peter@pcc.me.uk> | 2018-05-21 19:09:47 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2018-05-21 19:09:47 +0000 |
| commit | 2602a0d40c4113e467f7bb710a92a747bcfad44e (patch) | |
| tree | 65f9465b8776fed37fcefcd629b80ae89e0b34d4 /llvm | |
| parent | f14e62c9a53b20ed6ed3486588c5ac730cf50442 (diff) | |
| download | bcm5719-llvm-2602a0d40c4113e467f7bb710a92a747bcfad44e.tar.gz bcm5719-llvm-2602a0d40c4113e467f7bb710a92a747bcfad44e.zip | |
Fix ubsan bounds check failure.
llvm-svn: 332866
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp index 7b6ff131d78..8efb28414ac 100644 --- a/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp +++ b/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp @@ -365,7 +365,8 @@ bool X86AsmBackend::writeNopData(raw_ostream &OS, uint64_t Count) const { for (uint8_t i = 0; i < Prefixes; i++) OS << '\x66'; const uint8_t Rest = ThisNopLength - Prefixes; - OS.write(Nops[Rest - 1], Rest); + if (Rest != 0) + OS.write(Nops[Rest - 1], Rest); Count -= ThisNopLength; } while (Count != 0); |
