The check warns on suspicious calls to `memcmp`. It currently checks for comparing types that do not have unique object representations or are non-standard-layout. Based on https://wiki.sei.cmu.edu/confluence/display/c/EXP42-C.+Do+not+compare+padding+data https://wiki.sei.cmu.edu/confluence/display/c/FLP37-C.+Do+not+use+object+representations+to+compare+floating-point+values and part of https://wiki.sei.cmu.edu/confluence/display/cplusplus/OOP57-CPP.+Prefer+special+member+functions+and+overloaded+operators+to+C+Standard+Library+functions Add alias `cert-exp42-c` and `cert-flp37-c`. Some tests are currently failing at head, the check depends on D89649. Originally started in D71973 Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D89651
