• d-bugmail puremagic.com (52/52) Apr 10 https://issues.dlang.org/show_bug.cgi?id=24495

d-bugmail puremagic.com writes:

https://issues.dlang.org/show_bug.cgi?id=24495

          Issue ID: 24495
           Summary: ImportC: Struct initialization expression fails to
                    initialize field
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: artha samerion.com

I encountered this while working on Tree Sitter (which is C11-compliant) with
ImportC: https://tree-sitter.github.io/

---
#include <stdio.h>

struct Item {

    int a;

    struct {
        int b1;
        int b2;
    };

};

int main() {

    struct Item first = {
        .a = 1,
        .b1 = 2,
        .b2 = 3,
    };
    struct Item second = {
        .a = 1,
        {
            .b1 = 2,
            .b2 = 3,
        }
    };

    printf("first: %d, { %d, %d }\n", first.a, first.b1, first.b2);
    printf("second: %d, { %d, %d }\n", second.a, second.b1, second.b2);


    return 0;

}
---

$ gcc example.c && ./a.out
first: 1, { 2, 3 }
second: 1, { 2, 3 }
$ dmd example.c && ./example
first: 1, { 2, 3 }
second: 1, { 2, 0 }

DMD fails to initialize the second field of the inner struct if the struct is
instantiated explicitly.

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