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Branch: tests/829-expression-variables-in-initializers

Commit Graph

Author	SHA1	Message	Date
Siegfried Pammer	a308b64a7f	Add ILPretty regression test for duplicate stackalloc store A stackalloc initializer whose first element is written twice must not be folded into a 'stackalloc int[] { ... }': doing so drops the earlier store, which is observable when its value has side effects. HandleSequentialLocAllocInitializer already rejects this (the extra store trips the LoadCount and elementCount guards); the sequential-store offset matcher on its own would misclassify the second offset-0 write. The IL is derived from a C# 'stackalloc int[] { a, b, c }' disassembly with an extra offset-0 store injected, a shape no compiler emits. Assisted-by: Claude:claude-fable-5:Claude Code	2 months ago

Author

SHA1

Message

Date

Siegfried Pammer

a308b64a7f

Add ILPretty regression test for duplicate stackalloc store

A stackalloc initializer whose first element is written twice must not be
folded into a 'stackalloc int[] { ... }': doing so drops the earlier store,
which is observable when its value has side effects. HandleSequentialLocAllocInitializer
already rejects this (the extra store trips the LoadCount and elementCount
guards); the sequential-store offset matcher on its own would misclassify the
second offset-0 write. The IL is derived from a C# 'stackalloc int[] { a, b, c }'
disassembly with an extra offset-0 store injected, a shape no compiler emits.

Assisted-by: Claude:claude-fable-5:Claude Code

2 months ago

1 Commits (tests/829-expression-variables-in-initializers)