1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
From 308571e254ad30101be8c1247d2b0b64cf488386 Mon Sep 17 00:00:00 2001
From: Michael Schwendt <mschwendt@fedoraproject.org>
Date: Wed, 3 Feb 2016 21:56:11 +0100
Subject: [PATCH] left shifting a negative int is undefined behaviour /
narrowing conversion issues / for GCC 6
fix left shifts for 32-bit to avoid int overflow
avoid int overflow too
char on ARM is unsigned by default
---
libaudiofile/modules/SimpleModule.h | 2 +-
test/FloatToInt.cpp | 2 +-
test/IntToFloat.cpp | 2 +-
test/NeXT.cpp | 14 +++++++-------
test/Sign.cpp | 2 +-
5 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/libaudiofile/modules/SimpleModule.h b/libaudiofile/modules/SimpleModule.h
index 03c6c69..e4cc138 100644
--- a/libaudiofile/modules/SimpleModule.h
+++ b/libaudiofile/modules/SimpleModule.h
@@ -123,7 +123,7 @@ struct signConverter
typedef typename IntTypes<Format>::UnsignedType UnsignedType;
static const int kScaleBits = (Format + 1) * CHAR_BIT - 1;
- static const int kMinSignedValue = -1 << kScaleBits;
+ static const int kMinSignedValue = 0-(1U<<kScaleBits);
struct signedToUnsigned : public std::unary_function<SignedType, UnsignedType>
{
diff --git a/test/FloatToInt.cpp b/test/FloatToInt.cpp
index 0d179a8..bf491b2 100644
--- a/test/FloatToInt.cpp
+++ b/test/FloatToInt.cpp
@@ -115,7 +115,7 @@ TEST_F(FloatToIntTest, Int16)
EXPECT_EQ(readData[i], expectedData[i]);
}
-static const int32_t kMinInt24 = -1<<23;
+static const int32_t kMinInt24 = 0-(1U<<23);
static const int32_t kMaxInt24 = (1<<23) - 1;
TEST_F(FloatToIntTest, Int24)
diff --git a/test/IntToFloat.cpp b/test/IntToFloat.cpp
index b716635..1d91b58 100644
--- a/test/IntToFloat.cpp
+++ b/test/IntToFloat.cpp
@@ -117,7 +117,7 @@ TEST_F(IntToFloatTest, Int16)
EXPECT_EQ(readData[i], expectedData[i]);
}
-static const int32_t kMinInt24 = -1<<23;
+static const int32_t kMinInt24 = 0-(1U<<23);
static const int32_t kMaxInt24 = (1<<23) - 1;
TEST_F(IntToFloatTest, Int24)
diff --git a/test/NeXT.cpp b/test/NeXT.cpp
index 7e39850..a37cea1 100644
--- a/test/NeXT.cpp
+++ b/test/NeXT.cpp
@@ -37,13 +37,13 @@
#include "TestUtilities.h"
-const char kDataUnspecifiedLength[] =
+const signed char kDataUnspecifiedLength[] =
{
'.', 's', 'n', 'd',
0, 0, 0, 24, // offset of 24 bytes
- 0xff, 0xff, 0xff, 0xff, // unspecified length
+ -1, -1, -1, -1, // unspecified length
0, 0, 0, 3, // 16-bit linear
- 0, 0, 172, 68, // 44100 Hz
+ 0, 0, -84, 68, // 44100 Hz (0xAC44)
0, 0, 0, 1, // 1 channel
0, 1,
0, 1,
@@ -57,13 +57,13 @@ const char kDataUnspecifiedLength[] =
0, 55
};
-const char kDataTruncated[] =
+const signed char kDataTruncated[] =
{
'.', 's', 'n', 'd',
0, 0, 0, 24, // offset of 24 bytes
0, 0, 0, 20, // length of 20 bytes
0, 0, 0, 3, // 16-bit linear
- 0, 0, 172, 68, // 44100 Hz
+ 0, 0, -84, 68, // 44100 Hz (0xAC44)
0, 0, 0, 1, // 1 channel
0, 1,
0, 1,
@@ -152,13 +152,13 @@ TEST(NeXT, Truncated)
ASSERT_EQ(::unlink(testFileName.c_str()), 0);
}
-const char kDataZeroChannels[] =
+const signed char kDataZeroChannels[] =
{
'.', 's', 'n', 'd',
0, 0, 0, 24, // offset of 24 bytes
0, 0, 0, 2, // 2 bytes
0, 0, 0, 3, // 16-bit linear
- 0, 0, 172, 68, // 44100 Hz
+ 0, 0, -84, 68, // 44100 Hz (0xAC44)
0, 0, 0, 0, // 0 channels
0, 1
};
diff --git a/test/Sign.cpp b/test/Sign.cpp
index 7275399..c339514 100644
--- a/test/Sign.cpp
+++ b/test/Sign.cpp
@@ -116,7 +116,7 @@ TEST_F(SignConversionTest, Int16)
EXPECT_EQ(readData[i], expectedData[i]);
}
-static const int32_t kMinInt24 = -1<<23;
+static const int32_t kMinInt24 = 0-(1U<<23);
static const int32_t kMaxInt24 = (1<<23) - 1;
static const uint32_t kMaxUInt24 = (1<<24) - 1;
--
2.10.1
|
