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Fix jemalloc usage on OSX #82642

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merged 2 commits into from
Mar 8, 2021
Merged

Fix jemalloc usage on OSX #82642

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6e52b23
Fix jemalloc usage on OSX
sfackler Feb 28, 2021
1b4860a
Update compiler/rustc/src/main.rs
sfackler Mar 5, 2021
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14 changes: 14 additions & 0 deletions compiler/rustc/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,20 @@ fn main() {
static _F5: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void = jemalloc_sys::realloc;
#[used]
static _F6: unsafe extern "C" fn(*mut c_void) = jemalloc_sys::free;

// On OSX, jemalloc doesn't directly override malloc/free, but instead
// registers itself with the allocator's zone APIs in a ctor. However,
// the linker doesn't seem to consider ctors as "used" when statically
// linking, so we need to explicitly depend on the function.
#[cfg(target_os = "macos")]
{
extern "C" {
fn _rjem_je_zone_register();
}

#[used]
static _F7: unsafe extern "C" fn() = _rjem_je_zone_register;
}
}

rustc_driver::set_sigpipe_handler();
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