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License: BSD 3-Clause "New" or "Revised" License
Automatically exported from code.google.com/p/re1
License: BSD 3-Clause "New" or "Revised" License
What steps will reproduce the problem?
1.# ./re a 1a2
What is the expected output? What do you see instead?
expected: "thompson match (1,2)"
get: "thompson match (0,2)"
Original issue reported on code.google.com by [email protected]
on 10 Apr 2013 at 7:29
What steps will reproduce the problem?
1.
2.
3.
What is the expected output? What do you see instead?
What version of the product are you using? On what operating system?
Please provide any additional information below.
Original issue reported on code.google.com by [email protected]
on 10 Apr 2013 at 5:23
Segfault generated when the following is run:
./re "a|b" a
The following instructions are generated for the above regexp:
0. split 3, 1
1. any
2. jmp 0
3. save 0
4. split 4, 7
5. char a
6. jmp 8
7. char b
8. save 1
9. match
The full output:
Cat(NgStar(Dot), Paren(0, Alt(Lit(a), Lit(b))))
0. split 3, 1
1. any
2. jmp 0
3. save 0
4. split 4, 7
5. char a
6. jmp 8
7. char b
8. save 1
9. match
#2 a
Segmentation fault
I attached a patch that seems to fix the problem.
Original issue reported on code.google.com by [email protected]
on 28 Jan 2010 at 2:45
Attachments:
The recursive writing of addthread obscures the fact that the Split instruction
is the single reason we need a recursive thread processing order.
The switch cases in addthread in both pike.c and thompson.c all end upon tail
calls. This should be acknowledged and maybe coded with an explicit loop.
Original issue reported on code.google.com by [email protected]
on 30 May 2014 at 7:49
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