http://llvm.org/bugs/show_bug.cgi?id=22611
Bug ID: 22611
Summary: invalid prompt in
AbbreviationsTestCase.test_nonrunning_command_abbrevia
tions test - apparent thread race condition
Product: lldb
Version: unspecified
Hardware: PC
OS: FreeBSD
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
Classification: Unclassified
Looking at test failures on FreeBSD I came across one relating to prompt
setting.
Found by:
dotest.py --executable /data/emaste/src/llvm/build/bin/lldb -C /usr/bin/clang
-v -t -f AbbreviationsTestCase.test_nonrunning_command_abbreviations
which produced the following:
...
(lldb) settings set prompt "[with-three-trailing-spaces] "
runCmd: com sou ./change_prompt.lldb
output:
runCmd: settings show prompt
output: prompt (string) =
"\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645"
Expecting start string: prompt (string) = "[with-three-trailing-spaces] "
Not matched
While trying to reproduce this manually I found that short prompts generally
work, but longer prompts fail:
(lldb) settings set prompt "1234567890123456789012"
1234567890123456789012settings set prompt "12345678901234567890123"
¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥
On FreeBSD-11 (the development branch) malloc has "opt.junk" enabled by
default, which fills uninitialized allocated memory with 0xa5 and deallocated
memory with 0x5a; the ¥ character is 0xa5.
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