Malloc'ed structure initialization
I'm trying to initialize a structure using curly braces, but I'm actually trying to initialize the structure pointed to by the pointer returned from the call to malloc.
typedef struct foo{
int x;
int y;
} foo;
foo bar = {5,6};
I understand how to do this, but I need to do it in this context.
foo * bar = malloc(sizeof(foo));
*bar = {3,4};
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2 answers
(This was answered in the comments, so it became CW).
You need to specify the right side of the assignment, for example:
*bar = (foo) {3,4};
As @cremno pointed out in a comment, this is not a cast, but rather a complex literal assignment
The relevant section of the C99 standard is 6.5.2.5 Composite literals, which says:
A postfix expression consisting of a type name in parentheses and then a copied initializer list is a literal compound. It provides an unnamed object whose value is given by an initializer list
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