C99 designator member outside of aggregate initializer-CodePudding

struct Foo {
    char a[10];
    int b;
};

static Foo foo = {.a="bla"};

Compiling the above code gives the following gcc error:

$ gcc -std=gnu  2a test.cpp 

C99 designator ‘a’ outside aggregate initializer

I thought that c-string designators in initializer list like these are ok in C 20? What am I missing? I am using gcc version 10.

CodePudding user response：

Unfortunately, you will have to either not use designated initializers or use a different initializer for the array:

static Foo foo = {"bla"};
static Foo foo = {.a={'b', 'l', 'a', 0}};