[PATCH] D59725: Additions to creduce script

[Amy Huang via Phabricator via llvm-commits]

akhuang marked an inline comment as done.
akhuang added inline comments.


================
Comment at: cfe/trunk/utils/creduce-clang-crash.py:185
+    for msg in self.expected_output:
+      output += 'grep %s t.log || exit 1\n' % pipes.quote(msg)
+
----------------
lebedev.ri wrote:
> akhuang wrote:
> > lebedev.ri wrote:
> > > >>! In D59725#1477362, @arichardson wrote:
> > > >>>! In D59725#1477042, @lebedev.ri wrote:
> > > >> I've stumbled into an issue with the script:
> > > >> It got a line: `clang: /build/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp:2582: bool {anonymous}::IndVarSimplify::run(llvm::Loop*): Assertion `L->isRecursivelyLCSSAForm(*DT, *LI) && "LCSSA required to run indvars!"' failed.`
> > > >> And produced the following grep: `grep 'L->isRecursivelyLCSSAForm(*DT, *LI) && "LCSSA required to run indvars!"' t.log || exit 1`
> > > >> But that doesn't work, escapes should be applied. it should be
> > > >> `grep 'L->isRecursivelyLCSSAForm(\*DT, \*LI) && \"LCSSA required to run indvars!\"' t.log || exit 1`
> > > > 
> > > > In my script I use `grep -F " + shlex.quote(self.args.crash_message)` which should escape both the message and ensure that the grep argument is not interpreted as a regex.
> > > 
> > > Great to hear!
> > > It appears that the script is currently more primitive than that currently though.
> > Thanks; I added a `-F` flag (r359216), and it seems like that fixes the issue. 
> Thanks!
> What about `shlex`? How do you know bash won't expand that as regex already?
Sorry, not sure what you mean by bash expanding `shlex` as regex? It should be printing a quoted string to the bash script. 


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  https://reviews.llvm.org/D59725/new/

https://reviews.llvm.org/D59725