[Python-bugs-list] [ python-Bugs-726017 ] Ignore... my stupidity...

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Bugs item #726017, was opened at 2003-04-23 03:55
Message generated for change (Settings changed) made by twhitehead
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=726017&group_id=5470

Category: Extension Modules
Group: Python 2.2.2
>Status: Deleted
>Resolution: Invalid
Priority: 5
Submitted By: Tyson Whitehead (twhitehead)
Assigned to: Nobody/Anonymous (nobody)
>Summary: Ignore... my stupidity...

Initial Comment:
Python code... 
 
#!/usr/bin/python 
 
import TestC 
 
print 'The mighty attack...', 
for lItr in range(10000): 
  print lItr, 
  TestC.TestC() 
print '...was survived' 
 
...with C code... 
static PyObject *Test(PyObject *iSelf,PyObject *iArgs){ 
  return Py_None; 
} 
 
...results in... 
The mighty attack... 0 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 
117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 
132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 
147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 
162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 
177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 
207 208 209 210 211Aborted 
 
.. on both Intel and Alpha architectures (Debian unstable, lastest 
packages, kernel 2.4.20)  (don't know about other configurations), 
adding more python code above the loop changes how many it 
manages to count before 'aborting'. 

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Comment By: Tim Peters (tim_one)
Date: 2003-04-23 04:13

Message:
Logged In: YES 
user_id=31435

The C code uses the Python C API incorrectly.  Add

Py_INCREF(Py_None);

before you return, and then see what happens.

In addition, get in the habit of running your extensions 
under a debug build.  If you had tried that here, the 
program would have died with a well-behaved "negative 
refcount" error message.  That's too expensive to bother 
checking for in the release build.

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