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path: root/src/librustc_codegen_llvm/allocator.rs
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Diffstat (limited to 'src/librustc_codegen_llvm/allocator.rs')
-rw-r--r--src/librustc_codegen_llvm/allocator.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_codegen_llvm/allocator.rs b/src/librustc_codegen_llvm/allocator.rs
index 0beb8a8844c..7c237407c8f 100644
--- a/src/librustc_codegen_llvm/allocator.rs
+++ b/src/librustc_codegen_llvm/allocator.rs
@@ -33,7 +33,7 @@ pub(crate) unsafe fn codegen(tcx: TyCtxt, mods: &ModuleLlvm, kind: AllocatorKind
     let void = llvm::LLVMVoidTypeInContext(llcx);
 
     for method in ALLOCATOR_METHODS {
-        let mut args = Vec::new();
+        let mut args = Vec::with_capacity(method.inputs.len());
         for ty in method.inputs.iter() {
             match *ty {
                 AllocatorTy::Layout => {