Miri: use extern fn to expose interpreter operations to program; fix leak checker on Windows #1485
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Not sure where the best place to document these is, but we should definitely document them. I think somewhere near the stacked borrows debugging command line flags. |
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I just started writing a README section :) |
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@oli-obk what about this? |
oli-obk
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Jul 23, 2020
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Jul 24, 2020
Miri: use extern fn to expose interpreter operations to program; fix leak checker on Windows This PR realizes an idea that @oli-obk has been suggesting for a while: to use Miri-specific `extern` functions to provide some extra capabilities to the program. Initially, we have two of these methods, which libstd itself needs: * `miri_start_panic`, which replaces the intrinsic of the same name (mostly for consistency, to avoid having multiple mechanisms for Miri-specific functionality). * `miri_static_root`, which adds an allocation to a list of static "roots" that Miri considers as not having leaked (including all memory reachable through them). This is needed for rust-lang/miri#1302. We use `extern` functions instead of intrinsics for this so that user code can more easily call these Miri hoolks -- e.g. `miri_static_root` should be useful for rust-lang/miri#1318. The Miri side of this is at rust-lang/miri#1485. r? @oli-obk
bors
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Jul 24, 2020
Miri: use extern fn to expose interpreter operations to program; fix leak checker on Windows This PR realizes an idea that @oli-obk has been suggesting for a while: to use Miri-specific `extern` functions to provide some extra capabilities to the program. Initially, we have two of these methods, which libstd itself needs: * `miri_start_panic`, which replaces the intrinsic of the same name (mostly for consistency, to avoid having multiple mechanisms for Miri-specific functionality). * `miri_static_root`, which adds an allocation to a list of static "roots" that Miri considers as not having leaked (including all memory reachable through them). This is needed for rust-lang/miri#1302. We use `extern` functions instead of intrinsics for this so that user code can more easily call these Miri hoolks -- e.g. `miri_static_root` should be useful for rust-lang/miri#1318. The Miri side of this is at rust-lang/miri#1485. r? @oli-obk
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@bors r=oli-obk |
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📌 Commit c641fbd has been approved by |
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☀️ Test successful - checks-travis, status-appveyor |
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This is the Miri side of rust-lang/rust#74681.
Fixes #1302
Fixes #1318