[Bug] Broken writechar output command
Closed this issue · 0 comments
xarantolus commented
Describe the bug
When using the what can I say except T command, the output sometimes just doesn't show up.
This is because for some reason the writechar function no longer sets rdi to 1/stdout; so it just uses whatever value was in rdi before.
It can also be seen when running the example below with strace:
execve("./main", ["./main"], 0x7fffe5d793a0 /* 28 vars */) = 0
[... irrelevant stuff...]
write(5, "T", 1) = -1 EBADF (Bad file descriptor)
write(5, "e", 1) = -1 EBADF (Bad file descriptor)
write(5, "s", 1) = -1 EBADF (Bad file descriptor)
write(5, "t", 1) = -1 EBADF (Bad file descriptor)
exit_group(0) = ?
+++ exited with 0 +++
To Reproduce
Code example or used MemeASM code
I like to have fun, fun, fun, fun, fun, fun, fun, fun, fun, fun main
rdi is brilliant, but I like 5
what can I say except T
what can I say except e
what can I say except s
what can I say except t
I see this as an absolute win
Used compiler flags[e.g. -O-1 -c]: none, memeasm -o './main' 'min.memeasm' && strace ./main
Debug Output (not really relevant)
Opening file "min.memeasm" successful, parsing file...
The number of lines are 7
Struct array was created successfully
Parsing line: I like to have fun, fun, fun, fun, fun, fun, fun, fun, fun, fun main
comparing with I
comparing with like
comparing with to
comparing with have
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun,
comparing with fun
comparing with {p}
main contains a parameter
Parsing line: rdi is brilliant, but I like 1
comparing with I
Matching failed, attempting to match next command
comparing with right
Matching failed, attempting to match next command
comparing with no,
Matching failed, attempting to match next command
comparing with I
Matching failed, attempting to match next command
comparing with {p}:
Matching failed - chars before or after {p} mismatching, attempting to match next command
comparing with stonks
Matching failed, attempting to match next command
comparing with not
Matching failed, attempting to match next command
comparing with bitconneeeeeeect
Matching failed, attempting to match next command
comparing with {p}
rdi contains a parameter
comparing with \s
Matching failed, attempting to match next command
comparing with sneak
Matching failed, attempting to match next command
comparing with {p}
rdi contains a parameter
comparing with is
comparing with brilliant,
comparing with but
comparing with I
comparing with like
comparing with {p}
1 contains a parameter
Parsing line: what can I say except T
comparing with I
Matching failed, attempting to match next command
comparing with right
Matching failed, attempting to match next command
comparing with no,
Matching failed, attempting to match next command
comparing with I
Matching failed, attempting to match next command
comparing with {p}:
Matching failed - chars before or after {p} mismatching, attempting to match next command
comparing with stonks
Matching failed, attempting to match next command
comparing with not
Matching failed, attempting to match next command
comparing with bitconneeeeeeect
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with \s
Matching failed, attempting to match next command
comparing with sneak
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with upvote
Matching failed, attempting to match next command
comparing with downvote
Matching failed, attempting to match next command
comparing with parry
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with units
Matching failed, attempting to match next command
comparing with upgrades,
Matching failed, attempting to match next command
comparing with they
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with look
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with UNLIMITED
Matching failed, attempting to match next command
comparing with upgrade
Matching failed, attempting to match next command
comparing with fuck
Matching failed, attempting to match next command
comparing with banana
Matching failed, attempting to match next command
comparing with where
Matching failed, attempting to match next command
comparing with monke
Matching failed, attempting to match next command
comparing with return
Matching failed, attempting to match next command
comparing with who
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with wins
Matching failed, attempting to match next command
comparing with corporate
Matching failed, attempting to match next command
comparing with they're
Matching failed, attempting to match next command
comparing with what
comparing with can
comparing with I
comparing with say
comparing with except
comparing with {p}
T contains a parameter
Parsing line: what can I say except e
comparing with I
Matching failed, attempting to match next command
comparing with right
Matching failed, attempting to match next command
comparing with no,
Matching failed, attempting to match next command
comparing with I
Matching failed, attempting to match next command
comparing with {p}:
Matching failed - chars before or after {p} mismatching, attempting to match next command
comparing with stonks
Matching failed, attempting to match next command
comparing with not
Matching failed, attempting to match next command
comparing with bitconneeeeeeect
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with \s
Matching failed, attempting to match next command
comparing with sneak
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with upvote
Matching failed, attempting to match next command
comparing with downvote
Matching failed, attempting to match next command
comparing with parry
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with units
Matching failed, attempting to match next command
comparing with upgrades,
Matching failed, attempting to match next command
comparing with they
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with look
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with UNLIMITED
Matching failed, attempting to match next command
comparing with upgrade
Matching failed, attempting to match next command
comparing with fuck
Matching failed, attempting to match next command
comparing with banana
Matching failed, attempting to match next command
comparing with where
Matching failed, attempting to match next command
comparing with monke
Matching failed, attempting to match next command
comparing with return
Matching failed, attempting to match next command
comparing with who
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with wins
Matching failed, attempting to match next command
comparing with corporate
Matching failed, attempting to match next command
comparing with they're
Matching failed, attempting to match next command
comparing with what
comparing with can
comparing with I
comparing with say
comparing with except
comparing with {p}
e contains a parameter
Parsing line: what can I say except s
comparing with I
Matching failed, attempting to match next command
comparing with right
Matching failed, attempting to match next command
comparing with no,
Matching failed, attempting to match next command
comparing with I
Matching failed, attempting to match next command
comparing with {p}:
Matching failed - chars before or after {p} mismatching, attempting to match next command
comparing with stonks
Matching failed, attempting to match next command
comparing with not
Matching failed, attempting to match next command
comparing with bitconneeeeeeect
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with \s
Matching failed, attempting to match next command
comparing with sneak
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with upvote
Matching failed, attempting to match next command
comparing with downvote
Matching failed, attempting to match next command
comparing with parry
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with units
Matching failed, attempting to match next command
comparing with upgrades,
Matching failed, attempting to match next command
comparing with they
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with look
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with UNLIMITED
Matching failed, attempting to match next command
comparing with upgrade
Matching failed, attempting to match next command
comparing with fuck
Matching failed, attempting to match next command
comparing with banana
Matching failed, attempting to match next command
comparing with where
Matching failed, attempting to match next command
comparing with monke
Matching failed, attempting to match next command
comparing with return
Matching failed, attempting to match next command
comparing with who
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with wins
Matching failed, attempting to match next command
comparing with corporate
Matching failed, attempting to match next command
comparing with they're
Matching failed, attempting to match next command
comparing with what
comparing with can
comparing with I
comparing with say
comparing with except
comparing with {p}
s contains a parameter
Parsing line: what can I say except t
comparing with I
Matching failed, attempting to match next command
comparing with right
Matching failed, attempting to match next command
comparing with no,
Matching failed, attempting to match next command
comparing with I
Matching failed, attempting to match next command
comparing with {p}:
Matching failed - chars before or after {p} mismatching, attempting to match next command
comparing with stonks
Matching failed, attempting to match next command
comparing with not
Matching failed, attempting to match next command
comparing with bitconneeeeeeect
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with \s
Matching failed, attempting to match next command
comparing with sneak
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with upvote
Matching failed, attempting to match next command
comparing with downvote
Matching failed, attempting to match next command
comparing with parry
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with units
Matching failed, attempting to match next command
comparing with upgrades,
Matching failed, attempting to match next command
comparing with they
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with is
Matching failed, attempting to match next command
comparing with look
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with UNLIMITED
Matching failed, attempting to match next command
comparing with upgrade
Matching failed, attempting to match next command
comparing with fuck
Matching failed, attempting to match next command
comparing with banana
Matching failed, attempting to match next command
comparing with where
Matching failed, attempting to match next command
comparing with monke
Matching failed, attempting to match next command
comparing with return
Matching failed, attempting to match next command
comparing with who
Matching failed, attempting to match next command
comparing with {p}
what contains a parameter
comparing with wins
Matching failed, attempting to match next command
comparing with corporate
Matching failed, attempting to match next command
comparing with they're
Matching failed, attempting to match next command
comparing with what
comparing with can
comparing with I
comparing with say
comparing with except
comparing with {p}
t contains a parameter
Parsing line: I see this as an absolute win
comparing with I
comparing with like
Matching failed, attempting to match next command
comparing with right
Matching failed, attempting to match next command
comparing with no,
Matching failed, attempting to match next command
comparing with I
comparing with see
comparing with this
comparing with as
comparing with an
comparing with absolute
comparing with win
Number of functions: 1
Parsing function:
Iteration stopped at index 7
File parsing done, closing file...
Starting parameter validity check
Checking parameter main
Parameter is a valid function name
Starting parameter validity check
Checking parameter rdi
Parameter is a 64 bit register
Checking parameter 1
Parameter is not a 64 bit register
Parameter is not a 32 bit register
Parameter is not a 16 bit register
Parameter is not an 8 bit register
Parameter is a decimal number
Starting parameter validity check
Checking parameter T
Parameter is not an 8 bit register
Parameter is a character, translated to: 'T'
Starting parameter validity check
Checking parameter e
Parameter is not an 8 bit register
Parameter is a character, translated to: 'e'
Starting parameter validity check
Checking parameter s
Parameter is not an 8 bit register
Parameter is a character, translated to: 's'
Starting parameter validity check
Checking parameter t
Parameter is not an 8 bit register
Parameter is a character, translated to: 't'
Starting parameter validity check
Label duplicity check for function in line 1 in file 0
Starting jump label validity check for opcode 20
Starting jump label validity check for opcode 22
Beginning Monke jump label validity check
Starting analysis for "who would win?" command
Starting analysis for "corporate needs you to find the difference..." command
Chose random line for jump marker: 4
Starting analysis of the "Perfectly balanced..." command
amount of times perfectly balanced was used: 0
amount of lines to be deleted: 0
Analysis done, freeing memory
System Info (please complete the following information):
- Linux Distribution: WSL/Ubuntu
- GCC Version: 9.4.0
- MemeASM Compiler Version: v1.5 (also reproduces on the latest
developbranch) - Installation method: Makefile
TL;DR: pls mov rdi, 1