Completion doesn't work in C files after the "struct" keyword

[beijijiaohu]

int a_var = 1;
if (a_var) {} /* the auto completion is good /
if (!a_var) {} / the auto completion is not work */

struct m_type {
int c_var;
};
struct m_type t_var;
int a_var = 1, b_var =2;

int c = a_var + b_var; /* a_var and b_var are auto completed /
int c = a_var + t_var.c_var; / c_var can't auto completed */

[sean-mcmanus]

Your sample code is not valid C/C++. Our extension's autocomplete may not be have correctly if the code doesn't compile. Can you provide a repro sample that compiles? I wasn't able to repro a bug via modifying the code to make it compile.

[beijijiaohu]

#include <stdio.h>

struct m_type {
int c_var;
} t_var;

static int a_var = 1;
static int b_var = 0;

void test_add(void)
{
int d_var = a_var + t_var.c_var;
printf("a_var and t_var are auto completed, but .c_var is not!\n");
}

void test_if(void)
{
if (a_var)
printf("a_var in if is auto completed\n");
if (!b_var)
printf("b_var in if (!) is auto completed when I update the extension");
}

int main(int argc, char *argv[])
{
test_if();
test_add();
return 0;
}

[sean-mcmanus]

The "t_var." issue is a duplicate of #2184 and https://developercommunity.visualstudio.com/content/problem/407956/cc-intellisense-no-member-list-appears-after-typin.html -- it only has 2 upvotes so if more people could upvote that it would help get it fixed.

It sounds like the b_var issue is fixed with the most recent version of the extension (?).

[beijijiaohu]

// yes, the b_var issue is fixed with the most recent version of the extension
// And there are three new issue
// 1 if (!) to complete the struct member
// 2 gnu Initialize style to complete the struct member
// 3 the struct type "m_type" can't be complete, when i want to define a variable

#include <stdio.h>

struct m_type {
int c_var;
} t_var;

static int a_var = 1;
static int b_var = 0;

void test_if(void)
{
if (a_var)
printf("a_var in if is auto completed\n");
if (!b_var)
printf("b_var in if (!) is auto completed when I update the extension\n");
if (!t_var.c_var) // new issue 1
printf("t_var in if (!)is auto completed, but c_var is not!\n");
}

// new issue 2
// new issue 3
struct m_type init_t_var = { // struct is auto completed, but m_type is not
.c_var = 0, // c_var is not auto completed in this initial style
};

int main(int argc, char *argv[])
{
test_if();
return 0;
}

[sean-mcmanus]

I believe new issue 1 has the same root cause as the completion after the operator +.

New issue 2 is being tracked by #4610 .

Issue 3 is a new issue so we can use this issue to track that. The cause is that we're treating the text that comes after "struct" as being a new identifier so we're canceling autocomplete, but maybe we could enable completion in that case for "C" -- VS has the same issue, but the completion results do appear if completion is manually invoked, so that would be another alternative (or additional) change we could implement.