• d-bugmail puremagic.com (25/26) Sep 17 2022 https://issues.dlang.org/show_bug.cgi?id=23342

d-bugmail puremagic.com writes:

https://issues.dlang.org/show_bug.cgi?id=23342

          Issue ID: 23342
           Summary: ImportC: Array compound literals use the GC
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: ImportC
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: dave287091 gmail.com

6.5.2.4.5 states:

 The value of the compound literal is that of an unnamed object initialized by
the initializer list. If the compound literal occurs outside the body of a
function, the object has static storage duration; otherwise, it has automatic
storage duration associated with the enclosing block.

ImportC apparently creates them with the GC, as evidenced with the following C
program:

// arr.c
int main(){
    int* p = (int[]){3}; // Error: expression `[3]` uses the GC and cannot be
used with switch `-betterC`
    return 0;
}

Compiling it with -betterC reveals the problem.

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