engineering.backtrace.io/2020-03-11-how-hard-is-it-to-guide-test-case-generators-with-branch-coverage-feedback

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https://engineering.backtrace.io/2020-03-11-how-hard-is-it-to-guide-test-case-generators-with-branch-coverage-feedback

How hard is it to guide test case generators with branch coverage feedback?

To make a long story short, it’s almost easy, now that tracing is available on commodity hardware, especially with a small library to handle platform-specific setup. Here’s a graph of the empirical distribution functions for the number of calls into OpenSSL 1.0.1f it takes for Hypothesis to find Heartbleed, given a description of the format for Heartbeat requests (“grammar”), and the same with additional branch coverage feedback (“bts”, for Intel Branch Trace Store).



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How hard is it to guide test case generators with branch coverage feedback?

https://engineering.backtrace.io/2020-03-11-how-hard-is-it-to-guide-test-case-generators-with-branch-coverage-feedback

To make a long story short, it’s almost easy, now that tracing is available on commodity hardware, especially with a small library to handle platform-specific setup. Here’s a graph of the empirical distribution functions for the number of calls into OpenSSL 1.0.1f it takes for Hypothesis to find Heartbleed, given a description of the format for Heartbeat requests (“grammar”), and the same with additional branch coverage feedback (“bts”, for Intel Branch Trace Store).



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https://engineering.backtrace.io/2020-03-11-how-hard-is-it-to-guide-test-case-generators-with-branch-coverage-feedback

How hard is it to guide test case generators with branch coverage feedback?

To make a long story short, it’s almost easy, now that tracing is available on commodity hardware, especially with a small library to handle platform-specific setup. Here’s a graph of the empirical distribution functions for the number of calls into OpenSSL 1.0.1f it takes for Hypothesis to find Heartbleed, given a description of the format for Heartbeat requests (“grammar”), and the same with additional branch coverage feedback (“bts”, for Intel Branch Trace Store).

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      To make a long story short, it’s almost easy, now that tracing is available on commodity hardware, especially with a small library to handle platform-specific setup. Here’s a graph of the empirical distribution functions for the number of calls into OpenSSL 1.0.1f it takes for Hypothesis to find Heartbleed, given a description of the format for Heartbeat requests (“grammar”), and the same with additional branch coverage feedback (“bts”, for Intel Branch Trace Store).

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