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Re: Is test case with 700k lines of code a valid test case?
- From: <Paul_Koning at Dell dot com>
- To: <tarasevich at cs dot uni-saarland dot de>
- Cc: <gcc at gcc dot gnu dot org>
- Date: Mon, 14 Mar 2016 15:42:39 +0000
- Subject: Re: Is test case with 700k lines of code a valid test case?
- Authentication-results: sourceware.org; auth=none
- References: <F3880EB7-70F6-475B-A6E6-363B50DD2AD4 at cs dot uni-saarland dot de>
> On Mar 14, 2016, at 11:31 AM, Andrey Tarasevich <tarasevich@cs.uni-saarland.de> wrote:
>
> Hi,
>
> I have a source file with 700k lines of code 99% of which are printf() statements. Compiling this test case crashes GCC 5.3.0 with segmentation fault.
> Can such test case be considered valid or source files of size 35 MB are too much for a C compiler and it should crash? It crashes on Ubuntu 14.04 64bit with 16GB of RAM.
I have a rather simple view of this sort of thing. If I feed input to a program and the program crashes, that's always a bug. This is true even if the input was "invalid" in some way.
That said, 700k lines in a single source file is a bit extravagant, but I see no way that such a thing could be legitimately called "invalid". If it's all one function (or worse yet, one basic block), I would not be at all surprised if it exceeds a resource limit on how big a function can be, but if so, the expected output would be an error message, not a crash.
paul