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056eeeae30
fixes #25931 This fix addresses bug #25931 — a signature hash collision with importc-aliased pointer/cstring types. The problem: In compiler/sighashes.nim, the hashType procedure canonicalizes types for signature hashing. Integral types (tyInt..tyUInt64, etc.) were excluded from canonicalization so that types like pid_t (an importc alias) keep their backend spelling. But pointer and cstring types with importc annotations were not excluded — meaning a type like: type N {.importc: "const void *".} = pointer ...would be collapsed to just pointer in the signature hash, causing collisions when N and pointer are both used in procedure types within the same compilation unit. The fix (compiler/sighashes.nim:193): Adds tyPointer and tyCstring to the list of types that skip canonicalization, right alongside the integral types. The comment is updated to clarify this applies to "builtin scalar-ish / pointer-like types". The test (tests/ccgbugs/tsighash_typename_regression.nim:33-42): Adds a regression test exercising the exact scenario — an importc pointer alias used in both an object field type and a proc parameter type.
This directory contains the test cases.
Each test must have a filename of the form: t*.nim
Note: Testament is only aware of tests under a directory (eg tests/foo/) and will ignore
top-level tests like tests/tbar.nim.
Specs
Each test can contain a spec in a discard """ ... """ block.
Check out the parseSpec procedure in the specs module for a full and reliable reference
action
Specifies what action this test should take.
Default: run
Options:
compile- compiles the module and fails the test if compilations fails.run- compiles and runs the module, fails the test if compilation or execution of test code fails.reject- compiles the module and fails the test if compilation succeeds.
There are certain spec keys that imply run, including output and
outputsub.
Categories
Each folder under this directory represents a test category, which can be
tested by running koch tests pcat <category> (or cat to avoid parallel
testing, which is slower).
The folder dll contains simple DLL tests.
The folder realtimeGC contains a test for validating that the realtime GC
can run properly without linking against the nimrtl.dll/so.