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36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
//@ compile-flags: -O
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//@ ignore-debug
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// (with debug assertions turned on, `assert_unchecked` generates a real assertion)
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#![crate_type = "lib"]
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#![feature(try_with_capacity)]
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// CHECK-LABEL: @with_capacity_does_not_grow1
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#[no_mangle]
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pub fn with_capacity_does_not_grow1() -> Vec<u32> {
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let v = Vec::with_capacity(1234);
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// CHECK: call {{.*}}__rust_alloc(
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// CHECK-NOT: call {{.*}}__rust_realloc
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// CHECK-NOT: call {{.*}}capacity_overflow
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// CHECK-NOT: call {{.*}}finish_grow
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: memcpy
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// CHECK-NOT: memset
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v
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}
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// CHECK-LABEL: @try_with_capacity_does_not_grow2
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#[no_mangle]
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pub fn try_with_capacity_does_not_grow2() -> Option<Vec<Vec<u8>>> {
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let v = Vec::try_with_capacity(1234).ok()?;
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// CHECK: call {{.*}}__rust_alloc(
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// CHECK-NOT: call {{.*}}__rust_realloc
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// CHECK-NOT: call {{.*}}capacity_overflow
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// CHECK-NOT: call {{.*}}finish_grow
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// CHECK-NOT: call {{.*}}handle_alloc_error
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: memcpy
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// CHECK-NOT: memset
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Some(v)
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}
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