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# function pointers
cat <<'EOF' > expected
a
h
g
EOF
test_diff <<'EOF'
int* f1(int a);
int (*f2)(int a);
extern int atexit (void (*) (void));
extern int atexit (void (*fn) (void));
int printf(const char*, ...);
void g() { printf("g\n"); }
void h() { printf("h\n"); }
int main() {
atexit(g);
atexit(h);
printf("a\n");
}
EOF
# void functions
cat <<'EOF' > expected
123
EOF
test_diff <<'EOF'
int printf();
void foo_bar(int hoge_piyo) {
printf("%d\n", hoge_piyo);
}
int main() {
foo_bar(123);
return 0;
}
EOF
cat <<'EOF' > expected
EOF
test_diff <<'EOF'
struct S {
int a;
};
struct S* f();
struct S* g() {}
int main() {
return 0;
}
EOF
cat <<'EOF' > expected
hi
EOF
test_diff <<'EOF'
int printf();
void f() {
printf("hi\n");
return;
}
int main() {
f();
return 0;
}
EOF
# variadic functions
cat <<'EOF' > expected
123
456 789
EOF
test_diff <<'EOF'
#include <stdarg.h>
int fprintf();
struct FILE;
typedef struct FILE FILE;
extern FILE* stdout;
int vfprintf(FILE*, const char*, va_list);
void fatal_error(const char* msg, ...) {
va_list args;
va_start(args, msg);
vfprintf(stdout, msg, args);
va_end(args);
fprintf(stdout, "\n");
}
int main() {
fatal_error("%d", 123);
fatal_error("%d %d", 456, 789);
return 0;
}
EOF
test_exit_code 0 <<'EOF'
#include <stdarg.h>
#include <helpers.h>
int sum(int n, ...) {
va_list args;
va_start(args, n);
int s = 0;
for (int i = 0; i < n; ++i) {
s += va_arg(args, int);
}
va_end(args);
return s;
}
int main() {
ASSERT_EQ(400, sum(5, 100, 90, 80, 70, 60));
}
EOF
# implicit return
# C99: 5.1.2.2.3
test_exit_code 0 <<'EOF'
int main() {
}
EOF
test_exit_code 0 <<'EOF'
int main() {
1 + 2 + 3;
}
EOF
test_exit_code 0 <<'EOF'
int main() {
if (1);
else return 1;
}
EOF
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