llvm-project

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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//  -*- mode:C; c-basic-offset:4; tab-width:4; intent-tabs-mode:nil;  -*-
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// CONFIG
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#import <stdio.h>
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#import <stdlib.h>
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#import <string.h>
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typedef struct {
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  int a;
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  int b;
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} MiniStruct;
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int main (int argc, const char * argv[]) {
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    MiniStruct inny;
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    MiniStruct outty;
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    MiniStruct (^copyStruct)(MiniStruct);
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    memset(&inny, 0xA5, sizeof(inny));
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    memset(&outty, 0x2A, sizeof(outty));    
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    inny.a = 12;
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    inny.b = 42;
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    copyStruct = ^(MiniStruct aTinyStruct){ return aTinyStruct; };  // pass-by-value intrinsically copies the argument
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    outty = copyStruct(inny);
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    if ( &inny == &outty ) {
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        printf("%s: struct wasn't copied.", argv[0]);
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        exit(1);
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    }
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    if ( (inny.a != outty.a) || (inny.b != outty.b) ) {
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        printf("%s: struct contents did not match.", argv[0]);
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        exit(1);
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    }
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    printf("%s: success\n", argv[0]);
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    return 0;
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}
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