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56074b5231
The new implementation doesn't use weak lang items and instead changes `#[alloc_error_handler]` to an attribute macro just like `#[global_allocator]`. The attribute will generate the `__rg_oom` function which is called by the compiler-generated `__rust_alloc_error_handler`. If no `__rg_oom` function is defined in any crate then the compiler shim will call `__rdl_oom` in the alloc crate which will simply panic. This also fixes link errors with `-C link-dead-code` with `default_alloc_error_handler`: `__rg_oom` was previously defined in the alloc crate and would attempt to reference the `oom` lang item, even if it didn't exist. This worked as long as `__rg_oom` was excluded from linking since it was not called. This is a prerequisite for the stabilization of `default_alloc_error_handler` (#102318). |
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.. | ||
ast_lowering.ftl | ||
ast_passes.ftl | ||
attr.ftl | ||
borrowck.ftl | ||
builtin_macros.ftl | ||
codegen_gcc.ftl | ||
codegen_ssa.ftl | ||
compiletest.ftl | ||
const_eval.ftl | ||
driver.ftl | ||
errors.ftl | ||
expand.ftl | ||
hir_analysis.ftl | ||
infer.ftl | ||
interface.ftl | ||
lint.ftl | ||
metadata.ftl | ||
middle.ftl | ||
mir_dataflow.ftl | ||
monomorphize.ftl | ||
parser.ftl | ||
passes.ftl | ||
plugin_impl.ftl | ||
privacy.ftl | ||
query_system.ftl | ||
save_analysis.ftl | ||
session.ftl | ||
symbol_mangling.ftl | ||
trait_selection.ftl | ||
ty_utils.ftl |