From 091c8253f5155e2446a930531a38dc5292585226 Mon Sep 17 00:00:00 2001
From: "Duncan P. N. Exon Smith" <dexonsmith@apple.com>
Date: Fri, 21 Mar 2014 20:42:37 +0000
Subject: [PATCH] InstrProf: Change magic number to have non-text characters

Include non-text characters in the magic number so that text files can't
match.

<rdar://problem/15950346>

llvm-svn: 204513
---
 lib/ProfileData/InstrProfReader.cpp           |  16 ++++++++--------
 .../llvm-profdata/Inputs/binary.profdata      | Bin 1384 -> 1384 bytes
 .../raw-magic-but-no-header.test              |   4 ++--
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/lib/ProfileData/InstrProfReader.cpp b/lib/ProfileData/InstrProfReader.cpp
index a95d9bc3b08..f923ad2ddd9 100644
--- a/lib/ProfileData/InstrProfReader.cpp
+++ b/lib/ProfileData/InstrProfReader.cpp
@@ -90,14 +90,14 @@ RawInstrProfReader::RawInstrProfReader(std::unique_ptr<MemoryBuffer> DataBuffer)
 
 static uint64_t getRawMagic() {
   return
-    uint64_t('l') << 56 |
-    uint64_t('p') << 48 |
-    uint64_t('r') << 40 |
-    uint64_t('o') << 32 |
-    uint64_t('f') << 24 |
-    uint64_t('r') << 16 |
-    uint64_t('a') <<  8 |
-    uint64_t('w');
+    uint64_t(255) << 56 |
+    uint64_t('l') << 48 |
+    uint64_t('p') << 40 |
+    uint64_t('r') << 32 |
+    uint64_t('o') << 24 |
+    uint64_t('f') << 16 |
+    uint64_t('r') <<  8 |
+    uint64_t(129);
 }
 
 bool RawInstrProfReader::hasFormat(const MemoryBuffer &DataBuffer) {
diff --git a/test/tools/llvm-profdata/Inputs/binary.profdata b/test/tools/llvm-profdata/Inputs/binary.profdata
index 156c483d15f1979512b7599f89bfdba1e2d08bd8..e8cef21de5f258c5e08a1089280f282be0a77455 100644
GIT binary patch
delta 405
zcmaFC^@59|u_!ISs37P6L=MGzhs&Id3=9l6oFOz1kj(<cKngD20aXW*=Z0dC{1d3Y
z6;OGQ948cm<Uc^=85|+zvjWA$pco`y{~M~n1FC=nC@2iYAO#FA5RE^e@?1b6K_~`E
zb3o-MI6>5b<UnSCFbD`i<t30jh~&U}24$#%2&e)+peE!H(1*$|fXaj9Kp_UgAYcoX
gKLC{%2Z}L4F-YDKDt`hh57U<dl4RJtjPVdN0F*m22><{9

delta 405
zcmaFC^@59|Jh3P(zo;N*B8OsqLIDdS0|Ud2WC+azWV1jqkb;YMK-GcdxuF;&{{*UU
z1ymj+#|gzC`43QehD3<@tUxg_C<e*b|As2?fGXes3JOCpNC86%MB@*rJQq+%5Q;(4
z98mcQNf31)IglA33<5$>c?l#BA~~?0K^dwb0;+%ys0ld)^r7+#pz<I&P>6vr2-rg9
g4?yL`fnrQh43c+*%AbJB!}O(qBpEg@V?4wR047{2p#T5?

diff --git a/test/tools/llvm-profdata/raw-magic-but-no-header.test b/test/tools/llvm-profdata/raw-magic-but-no-header.test
index e899ece2755..6db723c3e25 100644
--- a/test/tools/llvm-profdata/raw-magic-but-no-header.test
+++ b/test/tools/llvm-profdata/raw-magic-but-no-header.test
@@ -1,6 +1,6 @@
-RUN: printf "warforpl" > %t
+RUN: printf '\201rforpl\377' > %t
 RUN: not llvm-profdata show %t 2>&1 | FileCheck %s
-RUN: printf "lprofraw" > %t
+RUN: printf '\377lprofr\201' > %t
 RUN: not llvm-profdata show %t 2>&1 | FileCheck %s
 
 CHECK: error: {{.+}}: Invalid header