[lldb] Warn the user about starting the --func-regex parameter with a… #1190
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…n asterisk Summary: Sometimes users think that setting a function regex for all function that contain the word 'needle' in their name looks like this: `*needle*`. However, LLDB only searches the function name and doesn't fully match it against the regex, so the leading and trailing '*' operators don't do anything and actually just cause the regex engine to reject the regular expression with "repetition-operator operand invalid". This patch makes this a bit more obvious to the user by printing a warning that a leading '*' before this regular expression here doesn't have any purpose (and will cause an error). This doesn't attempt to detect a case where there is only a trailing '*' as that would involve parsing the regex and it seems the most common way to end up in this situation is by doing `rbreak *needle*`. Reviewers: JDevlieghere Reviewed By: JDevlieghere Differential Revision: https://reviews.llvm.org/D78809 (cherry picked from commit aaf68cd)
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…n asterisk
Summary:
Sometimes users think that setting a function regex for all function that contain the word 'needle' in their
name looks like this:
*needle*. However, LLDB only searches the function name and doesn't fully matchit against the regex, so the leading and trailing '*' operators don't do anything and actually just cause the
regex engine to reject the regular expression with "repetition-operator operand invalid".
This patch makes this a bit more obvious to the user by printing a warning that a leading '' before this
regular expression here doesn't have any purpose (and will cause an error). This doesn't attempt to detect
a case where there is only a trailing '' as that would involve parsing the regex and it seems the most
common way to end up in this situation is by doing
rbreak *needle*.Reviewers: JDevlieghere
Reviewed By: JDevlieghere
Differential Revision: https://reviews.llvm.org/D78809
Small follow-up for rdar://problem/62233561
(cherry picked from commit aaf68cd)