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annotate Python/pyfpe.c @ 17405:afbb65b60fa2 2.0

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Inspired by Tim Peters' 1.14->1.15 checkin to asynchat Quoting orignal message: ''' Fix from the Madusa mailing list: http://groups.yahoo.com/group/medusa/message/333 It's clear that Medusa should not be checking for an empty buffer via "buf is ''". The patch merely changes "is" to "==". However, there's a mystery here all the same: Python attempts to store null strings uniquely, so it's unclear why "buf is ''" ever returned false when buf actually was empty. *Some* string operations produce non-unique null strings, e.g. '''
author Moshe Zadka <moshez@math.huji.ac.il>
date Wed, 11 Apr 2001 08:06:02 +0000
parents f79434ee41fa
children 2dea40e40d9d
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bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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1 #include "config.h"
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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2 #include "pyfpe.h"
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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3 /*
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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4 * The signal handler for SIGFPE is actually declared in an external
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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5 * module fpectl, or as preferred by the user. These variable
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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6 * definitions are required in order to compile Python without
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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7 * getting missing externals, but to actually handle SIGFPE requires
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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8 * defining a handler and enabling generation of SIGFPE.
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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9 */
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bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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11 #ifdef WANT_SIGFPE_HANDLER
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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12 jmp_buf PyFPE_jbuf;
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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13 int PyFPE_counter = 0;
bda01a374762 Changes for Lee Busby's SIGFPE patch set.
Guido van Rossum <guido@python.org>
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14 #endif
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16 /* Have this outside the above #ifdef, since some picky ANSI compilers issue a
ad6bc2c5d353 Restructure the file so that it is never empty. No longer needs
Guido van Rossum <guido@python.org>
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17 warning when compiling an empty file. */
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Guido van Rossum <guido@python.org>
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18
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Guido van Rossum <guido@python.org>
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19 double
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
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20 PyFPE_dummy(void *dummy)
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Guido van Rossum <guido@python.org>
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21 {
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Guido van Rossum <guido@python.org>
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22 return 1.0;
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23 }