Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 547 insertions, 0 deletions

diff --git a/test/fixedbugs/issue2615.go b/test/fixedbugs/issue2615.go
new file mode 100644
index 0000000..831110e
--- /dev/null
+++ b/test/fixedbugs/issue2615.go
@@ -0,0 +1,547 @@
+// run
+
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Issue 2615: a long chain of else if's causes an overflow
+// in the parser stack.
+
+package main
+
+// test returns the index of the lowest set bit in a 256-bit vector.
+func test(x [4]uint64) int {
+	if x[0]&(1<<0) != 0 {
+		return 0
+	} else if x[0]&(1<<1) != 0 {
+		return 1
+	} else if x[0]&(1<<2) != 0 {
+		return 2
+	} else if x[0]&(1<<3) != 0 {
+		return 3
+	} else if x[0]&(1<<4) != 0 {
+		return 4
+	} else if x[0]&(1<<5) != 0 {
+		return 5
+	} else if x[0]&(1<<6) != 0 {
+		return 6
+	} else if x[0]&(1<<7) != 0 {
+		return 7
+	} else if x[0]&(1<<8) != 0 {
+		return 8
+	} else if x[0]&(1<<9) != 0 {
+		return 9
+	} else if x[0]&(1<<10) != 0 {
+		return 10
+	} else if x[0]&(1<<11) != 0 {
+		return 11
+	} else if x[0]&(1<<12) != 0 {
+		return 12
+	} else if x[0]&(1<<13) != 0 {
+		return 13
+	} else if x[0]&(1<<14) != 0 {
+		return 14
+	} else if x[0]&(1<<15) != 0 {
+		return 15
+	} else if x[0]&(1<<16) != 0 {
+		return 16
+	} else if x[0]&(1<<17) != 0 {
+		return 17
+	} else if x[0]&(1<<18) != 0 {
+		return 18
+	} else if x[0]&(1<<19) != 0 {
+		return 19
+	} else if x[0]&(1<<20) != 0 {
+		return 20
+	} else if x[0]&(1<<21) != 0 {
+		return 21
+	} else if x[0]&(1<<22) != 0 {
+		return 22
+	} else if x[0]&(1<<23) != 0 {
+		return 23
+	} else if x[0]&(1<<24) != 0 {
+		return 24
+	} else if x[0]&(1<<25) != 0 {
+		return 25
+	} else if x[0]&(1<<26) != 0 {
+		return 26
+	} else if x[0]&(1<<27) != 0 {
+		return 27
+	} else if x[0]&(1<<28) != 0 {
+		return 28
+	} else if x[0]&(1<<29) != 0 {
+		return 29
+	} else if x[0]&(1<<30) != 0 {
+		return 30
+	} else if x[0]&(1<<31) != 0 {
+		return 31
+	} else if x[0]&(1<<32) != 0 {
+		return 32
+	} else if x[0]&(1<<33) != 0 {
+		return 33
+	} else if x[0]&(1<<34) != 0 {
+		return 34
+	} else if x[0]&(1<<35) != 0 {
+		return 35
+	} else if x[0]&(1<<36) != 0 {
+		return 36
+	} else if x[0]&(1<<37) != 0 {
+		return 37
+	} else if x[0]&(1<<38) != 0 {
+		return 38
+	} else if x[0]&(1<<39) != 0 {
+		return 39
+	} else if x[0]&(1<<40) != 0 {
+		return 40
+	} else if x[0]&(1<<41) != 0 {
+		return 41
+	} else if x[0]&(1<<42) != 0 {
+		return 42
+	} else if x[0]&(1<<43) != 0 {
+		return 43
+	} else if x[0]&(1<<44) != 0 {
+		return 44
+	} else if x[0]&(1<<45) != 0 {
+		return 45
+	} else if x[0]&(1<<46) != 0 {
+		return 46
+	} else if x[0]&(1<<47) != 0 {
+		return 47
+	} else if x[0]&(1<<48) != 0 {
+		return 48
+	} else if x[0]&(1<<49) != 0 {
+		return 49
+	} else if x[0]&(1<<50) != 0 {
+		return 50
+	} else if x[0]&(1<<51) != 0 {
+		return 51
+	} else if x[0]&(1<<52) != 0 {
+		return 52
+	} else if x[0]&(1<<53) != 0 {
+		return 53
+	} else if x[0]&(1<<54) != 0 {
+		return 54
+	} else if x[0]&(1<<55) != 0 {
+		return 55
+	} else if x[0]&(1<<56) != 0 {
+		return 56
+	} else if x[0]&(1<<57) != 0 {
+		return 57
+	} else if x[0]&(1<<58) != 0 {
+		return 58
+	} else if x[0]&(1<<59) != 0 {
+		return 59
+	} else if x[0]&(1<<60) != 0 {
+		return 60
+	} else if x[0]&(1<<61) != 0 {
+		return 61
+	} else if x[0]&(1<<62) != 0 {
+		return 62
+	} else if x[0]&(1<<63) != 0 {
+		return 63
+	} else if x[1]&(1<<0) != 0 {
+		return 64
+	} else if x[1]&(1<<1) != 0 {
+		return 65
+	} else if x[1]&(1<<2) != 0 {
+		return 66
+	} else if x[1]&(1<<3) != 0 {
+		return 67
+	} else if x[1]&(1<<4) != 0 {
+		return 68
+	} else if x[1]&(1<<5) != 0 {
+		return 69
+	} else if x[1]&(1<<6) != 0 {
+		return 70
+	} else if x[1]&(1<<7) != 0 {
+		return 71
+	} else if x[1]&(1<<8) != 0 {
+		return 72
+	} else if x[1]&(1<<9) != 0 {
+		return 73
+	} else if x[1]&(1<<10) != 0 {
+		return 74
+	} else if x[1]&(1<<11) != 0 {
+		return 75
+	} else if x[1]&(1<<12) != 0 {
+		return 76
+	} else if x[1]&(1<<13) != 0 {
+		return 77
+	} else if x[1]&(1<<14) != 0 {
+		return 78
+	} else if x[1]&(1<<15) != 0 {
+		return 79
+	} else if x[1]&(1<<16) != 0 {
+		return 80
+	} else if x[1]&(1<<17) != 0 {
+		return 81
+	} else if x[1]&(1<<18) != 0 {
+		return 82
+	} else if x[1]&(1<<19) != 0 {
+		return 83
+	} else if x[1]&(1<<20) != 0 {
+		return 84
+	} else if x[1]&(1<<21) != 0 {
+		return 85
+	} else if x[1]&(1<<22) != 0 {
+		return 86
+	} else if x[1]&(1<<23) != 0 {
+		return 87
+	} else if x[1]&(1<<24) != 0 {
+		return 88
+	} else if x[1]&(1<<25) != 0 {
+		return 89
+	} else if x[1]&(1<<26) != 0 {
+		return 90
+	} else if x[1]&(1<<27) != 0 {
+		return 91
+	} else if x[1]&(1<<28) != 0 {
+		return 92
+	} else if x[1]&(1<<29) != 0 {
+		return 93
+	} else if x[1]&(1<<30) != 0 {
+		return 94
+	} else if x[1]&(1<<31) != 0 {
+		return 95
+	} else if x[1]&(1<<32) != 0 {
+		return 96
+	} else if x[1]&(1<<33) != 0 {
+		return 97
+	} else if x[1]&(1<<34) != 0 {
+		return 98
+	} else if x[1]&(1<<35) != 0 {
+		return 99
+	} else if x[1]&(1<<36) != 0 {
+		return 100
+	} else if x[1]&(1<<37) != 0 {
+		return 101
+	} else if x[1]&(1<<38) != 0 {
+		return 102
+	} else if x[1]&(1<<39) != 0 {
+		return 103
+	} else if x[1]&(1<<40) != 0 {
+		return 104
+	} else if x[1]&(1<<41) != 0 {
+		return 105
+	} else if x[1]&(1<<42) != 0 {
+		return 106
+	} else if x[1]&(1<<43) != 0 {
+		return 107
+	} else if x[1]&(1<<44) != 0 {
+		return 108
+	} else if x[1]&(1<<45) != 0 {
+		return 109
+	} else if x[1]&(1<<46) != 0 {
+		return 110
+	} else if x[1]&(1<<47) != 0 {
+		return 111
+	} else if x[1]&(1<<48) != 0 {
+		return 112
+	} else if x[1]&(1<<49) != 0 {
+		return 113
+	} else if x[1]&(1<<50) != 0 {
+		return 114
+	} else if x[1]&(1<<51) != 0 {
+		return 115
+	} else if x[1]&(1<<52) != 0 {
+		return 116
+	} else if x[1]&(1<<53) != 0 {
+		return 117
+	} else if x[1]&(1<<54) != 0 {
+		return 118
+	} else if x[1]&(1<<55) != 0 {
+		return 119
+	} else if x[1]&(1<<56) != 0 {
+		return 120
+	} else if x[1]&(1<<57) != 0 {
+		return 121
+	} else if x[1]&(1<<58) != 0 {
+		return 122
+	} else if x[1]&(1<<59) != 0 {
+		return 123
+	} else if x[1]&(1<<60) != 0 {
+		return 124
+	} else if x[1]&(1<<61) != 0 {
+		return 125
+	} else if x[1]&(1<<62) != 0 {
+		return 126
+	} else if x[1]&(1<<63) != 0 {
+		return 127
+	} else if x[2]&(1<<0) != 0 {
+		return 128
+	} else if x[2]&(1<<1) != 0 {
+		return 129
+	} else if x[2]&(1<<2) != 0 {
+		return 130
+	} else if x[2]&(1<<3) != 0 {
+		return 131
+	} else if x[2]&(1<<4) != 0 {
+		return 132
+	} else if x[2]&(1<<5) != 0 {
+		return 133
+	} else if x[2]&(1<<6) != 0 {
+		return 134
+	} else if x[2]&(1<<7) != 0 {
+		return 135
+	} else if x[2]&(1<<8) != 0 {
+		return 136
+	} else if x[2]&(1<<9) != 0 {
+		return 137
+	} else if x[2]&(1<<10) != 0 {
+		return 138
+	} else if x[2]&(1<<11) != 0 {
+		return 139
+	} else if x[2]&(1<<12) != 0 {
+		return 140
+	} else if x[2]&(1<<13) != 0 {
+		return 141
+	} else if x[2]&(1<<14) != 0 {
+		return 142
+	} else if x[2]&(1<<15) != 0 {
+		return 143
+	} else if x[2]&(1<<16) != 0 {
+		return 144
+	} else if x[2]&(1<<17) != 0 {
+		return 145
+	} else if x[2]&(1<<18) != 0 {
+		return 146
+	} else if x[2]&(1<<19) != 0 {
+		return 147
+	} else if x[2]&(1<<20) != 0 {
+		return 148
+	} else if x[2]&(1<<21) != 0 {
+		return 149
+	} else if x[2]&(1<<22) != 0 {
+		return 150
+	} else if x[2]&(1<<23) != 0 {
+		return 151
+	} else if x[2]&(1<<24) != 0 {
+		return 152
+	} else if x[2]&(1<<25) != 0 {
+		return 153
+	} else if x[2]&(1<<26) != 0 {
+		return 154
+	} else if x[2]&(1<<27) != 0 {
+		return 155
+	} else if x[2]&(1<<28) != 0 {
+		return 156
+	} else if x[2]&(1<<29) != 0 {
+		return 157
+	} else if x[2]&(1<<30) != 0 {
+		return 158
+	} else if x[2]&(1<<31) != 0 {
+		return 159
+	} else if x[2]&(1<<32) != 0 {
+		return 160
+	} else if x[2]&(1<<33) != 0 {
+		return 161
+	} else if x[2]&(1<<34) != 0 {
+		return 162
+	} else if x[2]&(1<<35) != 0 {
+		return 163
+	} else if x[2]&(1<<36) != 0 {
+		return 164
+	} else if x[2]&(1<<37) != 0 {
+		return 165
+	} else if x[2]&(1<<38) != 0 {
+		return 166
+	} else if x[2]&(1<<39) != 0 {
+		return 167
+	} else if x[2]&(1<<40) != 0 {
+		return 168
+	} else if x[2]&(1<<41) != 0 {
+		return 169
+	} else if x[2]&(1<<42) != 0 {
+		return 170
+	} else if x[2]&(1<<43) != 0 {
+		return 171
+	} else if x[2]&(1<<44) != 0 {
+		return 172
+	} else if x[2]&(1<<45) != 0 {
+		return 173
+	} else if x[2]&(1<<46) != 0 {
+		return 174
+	} else if x[2]&(1<<47) != 0 {
+		return 175
+	} else if x[2]&(1<<48) != 0 {
+		return 176
+	} else if x[2]&(1<<49) != 0 {
+		return 177
+	} else if x[2]&(1<<50) != 0 {
+		return 178
+	} else if x[2]&(1<<51) != 0 {
+		return 179
+	} else if x[2]&(1<<52) != 0 {
+		return 180
+	} else if x[2]&(1<<53) != 0 {
+		return 181
+	} else if x[2]&(1<<54) != 0 {
+		return 182
+	} else if x[2]&(1<<55) != 0 {
+		return 183
+	} else if x[2]&(1<<56) != 0 {
+		return 184
+	} else if x[2]&(1<<57) != 0 {
+		return 185
+	} else if x[2]&(1<<58) != 0 {
+		return 186
+	} else if x[2]&(1<<59) != 0 {
+		return 187
+	} else if x[2]&(1<<60) != 0 {
+		return 188
+	} else if x[2]&(1<<61) != 0 {
+		return 189
+	} else if x[2]&(1<<62) != 0 {
+		return 190
+	} else if x[2]&(1<<63) != 0 {
+		return 191
+	} else if x[3]&(1<<0) != 0 {
+		return 192
+	} else if x[3]&(1<<1) != 0 {
+		return 193
+	} else if x[3]&(1<<2) != 0 {
+		return 194
+	} else if x[3]&(1<<3) != 0 {
+		return 195
+	} else if x[3]&(1<<4) != 0 {
+		return 196
+	} else if x[3]&(1<<5) != 0 {
+		return 197
+	} else if x[3]&(1<<6) != 0 {
+		return 198
+	} else if x[3]&(1<<7) != 0 {
+		return 199
+	} else if x[3]&(1<<8) != 0 {
+		return 200
+	} else if x[3]&(1<<9) != 0 {
+		return 201
+	} else if x[3]&(1<<10) != 0 {
+		return 202
+	} else if x[3]&(1<<11) != 0 {
+		return 203
+	} else if x[3]&(1<<12) != 0 {
+		return 204
+	} else if x[3]&(1<<13) != 0 {
+		return 205
+	} else if x[3]&(1<<14) != 0 {
+		return 206
+	} else if x[3]&(1<<15) != 0 {
+		return 207
+	} else if x[3]&(1<<16) != 0 {
+		return 208
+	} else if x[3]&(1<<17) != 0 {
+		return 209
+	} else if x[3]&(1<<18) != 0 {
+		return 210
+	} else if x[3]&(1<<19) != 0 {
+		return 211
+	} else if x[3]&(1<<20) != 0 {
+		return 212
+	} else if x[3]&(1<<21) != 0 {
+		return 213
+	} else if x[3]&(1<<22) != 0 {
+		return 214
+	} else if x[3]&(1<<23) != 0 {
+		return 215
+	} else if x[3]&(1<<24) != 0 {
+		return 216
+	} else if x[3]&(1<<25) != 0 {
+		return 217
+	} else if x[3]&(1<<26) != 0 {
+		return 218
+	} else if x[3]&(1<<27) != 0 {
+		return 219
+	} else if x[3]&(1<<28) != 0 {
+		return 220
+	} else if x[3]&(1<<29) != 0 {
+		return 221
+	} else if x[3]&(1<<30) != 0 {
+		return 222
+	} else if x[3]&(1<<31) != 0 {
+		return 223
+	} else if x[3]&(1<<32) != 0 {
+		return 224
+	} else if x[3]&(1<<33) != 0 {
+		return 225
+	} else if x[3]&(1<<34) != 0 {
+		return 226
+	} else if x[3]&(1<<35) != 0 {
+		return 227
+	} else if x[3]&(1<<36) != 0 {
+		return 228
+	} else if x[3]&(1<<37) != 0 {
+		return 229
+	} else if x[3]&(1<<38) != 0 {
+		return 230
+	} else if x[3]&(1<<39) != 0 {
+		return 231
+	} else if x[3]&(1<<40) != 0 {
+		return 232
+	} else if x[3]&(1<<41) != 0 {
+		return 233
+	} else if x[3]&(1<<42) != 0 {
+		return 234
+	} else if x[3]&(1<<43) != 0 {
+		return 235
+	} else if x[3]&(1<<44) != 0 {
+		return 236
+	} else if x[3]&(1<<45) != 0 {
+		return 237
+	} else if x[3]&(1<<46) != 0 {
+		return 238
+	} else if x[3]&(1<<47) != 0 {
+		return 239
+	} else if x[3]&(1<<48) != 0 {
+		return 240
+	} else if x[3]&(1<<49) != 0 {
+		return 241
+	} else if x[3]&(1<<50) != 0 {
+		return 242
+	} else if x[3]&(1<<51) != 0 {
+		return 243
+	} else if x[3]&(1<<52) != 0 {
+		return 244
+	} else if x[3]&(1<<53) != 0 {
+		return 245
+	} else if x[3]&(1<<54) != 0 {
+		return 246
+	} else if x[3]&(1<<55) != 0 {
+		return 247
+	} else if x[3]&(1<<56) != 0 {
+		return 248
+	} else if x[3]&(1<<57) != 0 {
+		return 249
+	} else if x[3]&(1<<58) != 0 {
+		return 250
+	} else if x[3]&(1<<59) != 0 {
+		return 251
+	} else if x[3]&(1<<60) != 0 {
+		return 252
+	} else if x[3]&(1<<61) != 0 {
+		return 253
+	} else if x[3]&(1<<62) != 0 {
+		return 254
+	} else if x[3]&(1<<63) != 0 {
+		return 255
+	}
+	return -1
+}
+
+func main() {
+	const ones = ^uint64(0)
+	for i := 0; i < 256; i++ {
+		bits := [4]uint64{ones, ones, ones, ones}
+
+		// clear bottom i bits
+		bits[i/64] ^= 1<<(uint(i)&63) - 1
+		for j := i/64 - 1; j >= 0; j-- {
+			bits[j] = 0
+		}
+
+		k := test(bits)
+		if k != i {
+			print("test(bits)=", k, " want ", i, "\n")
+			panic("failed")
+		}
+	}
+}