Test time analyses csmith #243
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l-kent
reviewed
Sep 16, 2024
| # produces programs that we can't handle | ||
| # cmd = ["csmith", "--seed", str(seed), "--max-block-size", str(max_blocksize), "--max-funcs", str(max_funcs), "--output", f"{fname}.c"] | ||
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| csmith_safe = "--no-arrays --no-bitfields --no-checksum --no-comma-operators --no-longlong --no-int8 --no-uint8 --no-float --no-math64 --no-inline-function --no-safe-math --no-packed-struct --no-pointers --no-structs --no-unions --no-volatile-pointers --no-const-pointers".split(" ") |
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I'm curious, what can't we handle about each of these things that have been disabled?
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It was just an incompleteness in steensgaard wrt MemoryLoads, this list is being overly conservative I'm not sure precisely what its disabling that makes it not generate that case, I'll dig up the example again.
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Please share whatever case broke the Steensgaard, and maybe file an issue for it.
l-kent
reviewed
Sep 16, 2024
examples/csmith/Makefile
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| OUTS=$(addsuffix .out,$(SOURCENAMES)) | ||
| CHECKSUMS=$(addsuffix .checksum,$(SOURCENAMES)) | ||
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| CSMITH_HEADER = "/nix/store/6rawnpny818v7wki6zlr3i0f3phmysyb-csmith-2.3.0/include/csmith-2.3.0/" |
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is hardcoding this a good idea/going to be useful to anyone else?
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No, It should be at least the normal install location /usr/include/csmith
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This profiles the default static analysis pipeline against a set of random C programs generated by csmith.
It outputs the results in CSV and gnuplot format to produce plots like:
usage:
The generation script and tests all run singlethreaded so this takes quite a while to run unfortunately. Tests could possibly be multithreaded via
Future.sequencebut I don't know of a good way to avoid the JVM running out of memory by loading everything at once.