Mercurial > hg-stable
annotate tests/test-parseindex.t @ 37284:009d0283de5f
debugcommands: drop base revision from debugindex
Revlog index data consists of generic index metadata that will
likely be implemented across all storage engines and revlog-specifc
metadata.
Most tests printing index data only care about the generic fields.
This commit drops the printing of the base revision from
`hg debugindex`. This value is an implementation detail of
revlogs / delta chains. If tests are interested in verifying this
implementation detail, `hg debugdeltachain` is a better command.
Most tests were skipping over this field anyway. Tests that weren't
looked like they were newer. So my guess is we forgot to make them
skip the field to match the style of the older tests. This reinforces
my belief that the base revision is not worth having in
`hg debugindex`.
Differential Revision: https://phab.mercurial-scm.org/D3027
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 02 Apr 2018 16:28:20 -0700 |
parents | 806b07d7c7d6 |
children | d4e62df1c73d |
rev | line source |
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1 revlog.parseindex must be able to parse the index file even if |
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2 an index entry is split between two 64k blocks. The ideal test |
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3 would be to create an index file with inline data where |
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4 64k < size < 64k + 64 (64k is the size of the read buffer, 64 is |
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5 the size of an index entry) and with an index entry starting right |
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6 before the 64k block boundary, and try to read it. |
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7 We approximate that by reducing the read buffer to 1 byte. |
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8 |
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9 $ hg init a |
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10 $ cd a |
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11 $ echo abc > foo |
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12 $ hg add foo |
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13 $ hg commit -m 'add foo' |
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14 $ echo >> foo |
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15 $ hg commit -m 'change foo' |
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16 $ hg log -r 0: |
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17 changeset: 0:7c31755bf9b5 |
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18 user: test |
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19 date: Thu Jan 01 00:00:00 1970 +0000 |
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20 summary: add foo |
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21 |
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22 changeset: 1:26333235a41c |
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23 tag: tip |
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24 user: test |
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25 date: Thu Jan 01 00:00:00 1970 +0000 |
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26 summary: change foo |
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27 |
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28 $ cat >> test.py << EOF |
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29 > from mercurial import changelog, vfs |
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30 > from mercurial.node import * |
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31 > |
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32 > class singlebyteread(object): |
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33 > def __init__(self, real): |
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34 > self.real = real |
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35 > |
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36 > def read(self, size=-1): |
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37 > if size == 65536: |
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38 > size = 1 |
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39 > return self.real.read(size) |
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40 > |
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41 > def __getattr__(self, key): |
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42 > return getattr(self.real, key) |
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43 > |
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44 > def __enter__(self): |
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45 > self.real.__enter__() |
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46 > return self |
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47 > |
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48 > def __exit__(self, *args, **kwargs): |
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49 > return self.real.__exit__(*args, **kwargs) |
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50 > |
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51 > def opener(*args): |
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52 > o = vfs.vfs(*args) |
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53 > def wrapper(*a, **kwargs): |
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54 > f = o(*a, **kwargs) |
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55 > return singlebyteread(f) |
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56 > return wrapper |
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57 > |
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58 > cl = changelog.changelog(opener('.hg/store')) |
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59 > print len(cl), 'revisions:' |
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60 > for r in cl: |
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61 > print short(cl.node(r)) |
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62 > EOF |
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63 $ $PYTHON test.py |
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64 2 revisions: |
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65 7c31755bf9b5 |
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66 26333235a41c |
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67 |
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68 $ cd .. |
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69 |
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70 #if no-pure |
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71 |
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72 Test SEGV caused by bad revision passed to reachableroots() (issue4775): |
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73 |
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74 $ cd a |
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75 |
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76 $ $PYTHON <<EOF |
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77 > from mercurial import changelog, vfs |
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78 > cl = changelog.changelog(vfs.vfs('.hg/store')) |
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79 > print 'good heads:' |
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80 > for head in [0, len(cl) - 1, -1]: |
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81 > print'%s: %r' % (head, cl.reachableroots(0, [head], [0])) |
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82 > print 'bad heads:' |
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83 > for head in [len(cl), 10000, -2, -10000, None]: |
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84 > print '%s:' % head, |
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85 > try: |
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86 > cl.reachableroots(0, [head], [0]) |
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87 > print 'uncaught buffer overflow?' |
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88 > except (IndexError, TypeError) as inst: |
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89 > print inst |
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90 > print 'good roots:' |
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91 > for root in [0, len(cl) - 1, -1]: |
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92 > print '%s: %r' % (root, cl.reachableroots(root, [len(cl) - 1], [root])) |
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93 > print 'out-of-range roots are ignored:' |
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94 > for root in [len(cl), 10000, -2, -10000]: |
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95 > print '%s: %r' % (root, cl.reachableroots(root, [len(cl) - 1], [root])) |
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96 > print 'bad roots:' |
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97 > for root in [None]: |
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98 > print '%s:' % root, |
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99 > try: |
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100 > cl.reachableroots(root, [len(cl) - 1], [root]) |
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101 > print 'uncaught error?' |
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102 > except TypeError as inst: |
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103 > print inst |
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104 > EOF |
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105 good heads: |
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106 0: [0] |
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107 1: [0] |
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108 -1: [] |
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109 bad heads: |
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110 2: head out of range |
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111 10000: head out of range |
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112 -2: head out of range |
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113 -10000: head out of range |
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114 None: an integer is required |
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115 good roots: |
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116 0: [0] |
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117 1: [1] |
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118 -1: [-1] |
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119 out-of-range roots are ignored: |
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120 2: [] |
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121 10000: [] |
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122 -2: [] |
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123 -10000: [] |
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124 bad roots: |
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125 None: an integer is required |
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126 |
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127 $ cd .. |
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128 |
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129 Test corrupted p1/p2 fields that could cause SEGV at parsers.c: |
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130 |
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131 $ mkdir invalidparent |
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132 $ cd invalidparent |
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133 |
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134 $ hg clone --pull -q --config phases.publish=False ../a limit |
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135 $ hg clone --pull -q --config phases.publish=False ../a segv |
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136 $ rm -R limit/.hg/cache segv/.hg/cache |
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137 |
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138 $ $PYTHON <<EOF |
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139 > data = open("limit/.hg/store/00changelog.i", "rb").read() |
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140 > for n, p in [('limit', '\0\0\0\x02'), ('segv', '\0\x01\0\0')]: |
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141 > # corrupt p1 at rev0 and p2 at rev1 |
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142 > d = data[:24] + p + data[28:127 + 28] + p + data[127 + 32:] |
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143 > open(n + "/.hg/store/00changelog.i", "wb").write(d) |
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144 > EOF |
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145 |
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146 $ hg -R limit debugindex -f1 -c |
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147 rev flag offset length size link p1 p2 nodeid |
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148 0 0000 0 63 62 0 2 -1 7c31755bf9b5 |
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149 1 0000 63 66 65 1 0 2 26333235a41c |
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150 |
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151 $ hg -R limit debugdeltachain -c |
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152 rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio |
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153 0 1 1 -1 base 63 62 63 1.01613 63 0 0.00000 |
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154 1 2 1 -1 base 66 65 66 1.01538 66 0 0.00000 |
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155 |
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156 $ hg -R segv debugindex -f1 -c |
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157 rev flag offset length size link p1 p2 nodeid |
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158 0 0000 0 63 62 0 65536 -1 7c31755bf9b5 |
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159 1 0000 63 66 65 1 0 65536 26333235a41c |
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160 |
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161 $ hg -R segv debugdeltachain -c |
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162 rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio |
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163 0 1 1 -1 base 63 62 63 1.01613 63 0 0.00000 |
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164 1 2 1 -1 base 66 65 66 1.01538 66 0 0.00000 |
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165 |
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166 $ cat <<EOF > test.py |
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167 > import sys |
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168 > from mercurial import changelog, vfs |
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169 > cl = changelog.changelog(vfs.vfs(sys.argv[1])) |
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170 > n0, n1 = cl.node(0), cl.node(1) |
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171 > ops = [ |
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172 > ('reachableroots', |
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173 > lambda: cl.index.reachableroots2(0, [1], [0], False)), |
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174 > ('compute_phases_map_sets', lambda: cl.computephases([[0], []])), |
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175 > ('index_headrevs', lambda: cl.headrevs()), |
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176 > ('find_gca_candidates', lambda: cl.commonancestorsheads(n0, n1)), |
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177 > ('find_deepest', lambda: cl.ancestor(n0, n1)), |
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178 > ] |
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179 > for l, f in ops: |
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180 > print l + ':', |
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181 > try: |
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182 > f() |
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183 > print 'uncaught buffer overflow?' |
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184 > except ValueError, inst: |
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185 > print inst |
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186 > EOF |
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187 |
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188 $ $PYTHON test.py limit/.hg/store |
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189 reachableroots: parent out of range |
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190 compute_phases_map_sets: parent out of range |
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191 index_headrevs: parent out of range |
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192 find_gca_candidates: parent out of range |
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193 find_deepest: parent out of range |
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194 $ $PYTHON test.py segv/.hg/store |
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195 reachableroots: parent out of range |
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196 compute_phases_map_sets: parent out of range |
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197 index_headrevs: parent out of range |
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198 find_gca_candidates: parent out of range |
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199 find_deepest: parent out of range |
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200 |
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201 $ cd .. |
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202 |
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203 #endif |