Rollup of 3 pull requests#150742
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NVPTX does not support cycles in static initializers. LLVM produces an error when attempting to codegen such constructs (like self referential structs). To not produce LLVM UB we instead emit a post-monomorphization error on Rust side before reaching codegen. This is achieved by analysing a subgraph of the "mono item graph" that only contains statics: 1. Calculate the strongly connected components (SCCs) of the graph 2. Check for cycles (more than one node in a SCC or exactly one node which references itself)
…ubilee `c_variadic`: provide our own `va_arg` implementation for more targets tracking issue: rust-lang#44930 Provide our own implementations in order to guarantee the behavior of `va_arg`. We will only be able to stabilize `c_variadic` on targets where we know and guarantee the properties of `va_arg`. r? workingjubilee
…clic, r=workingjubilee Ensure that static initializers are acyclic for NVPTX NVPTX does not support cycles in static initializers (see rust-lang#146787). LLVM produces an error when attempting to generate code for such constructs, like self-referential structs. To avoid LLVM UB, we emit a post-monomorphization error on the Rust side before reaching codegen. This is achieved by analyzing a subgraph of the "mono item graph" that only contains statics. 1. Calculate the strongly connected components (SCCs) of the graph. 2. Check for cycles (more than one node in an SCC or one node that references itself).
Unix implementation for stdio set/take/replace Tracking issue: rust-lang#150667 ACP: rust-lang/libs-team#500
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…uwer Rollup of 3 pull requests Successful merges: - #150094 (`c_variadic`: provide our own `va_arg` implementation for more targets) - #150569 (Ensure that static initializers are acyclic for NVPTX) - #150668 (Unix implementation for stdio set/take/replace) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
c_variadic: provide our ownva_argimplementation for more targets #150094 (c_variadic: provide our ownva_argimplementation for more targets)r? @ghost
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