tree c94dbc2c1799c0542569db424db9cd62595e37f3
parent 25fc52e655fb4bfd3bb89948d5cbfe011e1b8984
author Kees Cook <kees@kernel.org> 1746480641 -0700
committer GitHub <noreply@github.com> 1746480641 -0700
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[randstruct] Also randomize composite function pointer structs (#138385)

Check for struct members that are structs filled only with function
pointers by recursively examining it. Since the lamba
IsFunctionPointerOrForwardDecl cannot call itself directly, move it into
a helper function, EntirelyFunctionPointers, so it can be called from
the lambda.

Add test for composite function pointer structs getting automatically
randomized.

Add more tests for validating automatic randomization vs explicitly
annotated with "randomize_layout", and excluded with
"no_randomize_layout".

Reorder the "should we randomize?" "if" statement to check for
enablement before checking for Record details.

Fixes #138355