01-06-2019
Quote:
Originally Posted by
azdps
EDIT: Reason for segmentation fault solved
Okay I found this information reference
OpenBSD awk vs gawk. It states "Gawk uses 53-bit unsigned integers, but OpenBSD awk uses 32-bit signed integers." This applies to the bitwise operations.
If I convert
128.0.0.0 to decimal the result is 2,147,483,648 which exceeds the maximum 32-bit signed integer value for variables 2,147,483,647 declared as integers. So it's clear now why the script that uses the native
lshift, rshift, or bitwise operations is causing an awk segmentation fault with IP's greater than
128.0.0.0 and the script that uses the custom
bit_lshift, bit_rshift, bit_or bitwise operations doesn't.
End of a long story =(
The only time segmentation fault isn't programmer error is when your RAM is faulty or someone pulled a disk they really shouldn't have. This isn't expected behavior, this is still a bug.
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IGAWK(1) Utility Commands IGAWK(1)
NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO
gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)