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/*
* @(#) example.c 1.5 93/06/18 22:29:46
*
* Examples of things that can be done with the unproto package
*/
typedef char *charstar;
/*
* New-style argument list with structured argument, one field being pointer
* to function returning pointer to function with function-pointer argument
*/
x(struct {
struct {
int (*(*foo) (int (*arg1) (double))) (float arg2);
} foo;
} baz) {
return (0);
}
/* New-style function-pointer declaration. */
int (*(*bar0) (float)) (int);
/* Old-style argument list with new-style argument type. */
baz0(bar)
int (*(*bar) (float)) (int);
{}
/*
* New-style argument list with new-style argument type, declaration
* embedded within block. Plus a couple assignments with function calls that
* look like casts.
*/
foo(int (*(*bar) (float)) (int))
{
int (*baz) (int) = (int (*) (int)) 0,
y = (y * (*baz) (y)),
*(*z) (int) = (int *(*) (int)) 0;
struct { int (*foo)(int); } *(*s)(int) =
(struct { int (*foo)(int); } *(*)(int)) 0;
{
y = (y * (*baz) (y));
}
{
z = (int *(*) (int)) 0;
}
{
s = (struct { int (*foo)(int); } *(*)(int)) 0;
}
return (0);
}
/* Multiple declarations in one statement */
test1()
{
int foo2,*(*(*bar)(int))(float),*baz(double);
}
/* Discriminate declarations from executable statements */
test2(charstar y)
{
int foo = 5,atoi(charstar);
foo = 5,atoi(y);
}
/* Declarations without explicit type */
test3,test4(int);
test5(int y)
{
{
test3;
}
{
test4(y);
}
}
test6[1],test7(int);
test7(int x)
{
{
test6[1];
}
{
test7(x);
}
}
/* Checking a complicated cast */
struct {
struct {
int (*f)(int), o;
} bar;
} (*baz2)(int) = (struct { struct { int (*f)(int), o; } bar; } (*)(int)) 0;
/* Distinguish things with the same shape but with different meaning */
test8(x)
{
{
struct {
int foo;
} bar(charstar);
}
{
do {
int foo;
} while (x);
}
}
/* Do not think foo(*bar) is a function pointer declaration */
test9(char *bar)
{
foo(*bar);
}
/* another couple of special-cased words. */
test10(int x)
{
{
int test10(int);
do test10(x);
while (x);
}
{
return test10(x);
}
}
test11(int *x)
{
while (*x)
(putchar(*x++));
}
test11a(int *x)
{
for (*x;;)
(putchar(*x++));
}
/* #include directive between stuff that requires lookahead */
test12()
{
char *x = "\xf\0002\002\02\2" /* foo */
#include "/dev/null"
"\abar";
printf("foo" /* 1 */ "bar" /* 2 */ "baz");
*x = '\a';
*x = '\xff';
}
int test13(void);
/* line continuations in the middle of tokens */
te\
st14();
charstar test15 = "foo\
bar";
char test16 = "foo\\
abar";
/* Array dimensions with unexpanded macros */
test17(charstar foo[bar]){}
int (*(*test18[bar])(charstar))(charstar) = \
(int (*(*[bar])(charstar))(charstar)) 0;
/* Function returning pointer to function */
int (*(*test19(long))(int))(double);
/* GCC accepts the following stuff, K&R C does not... */
void test20(int test21(double)) {}
void test22(struct { int foo; } test23(short)) {}
/* Do not blindly rewrite (*name(stuff))(otherstuff) */
void test23()
{
int (*test24(int)) (int),
y = (*test24(2)) (3),
z = ((*test24(2)) (3));
}
/* Function returning pointer to function */
int (*(*test25(long foo))(int bar))(double baz){ /* body */ }
int (*(*test26(foo))())()
long foo;
{ /* body */ }
#define ARGSTR() struct {int l; char c[1];}
void functie(ARGSTR() *cmdlin, ARGSTR() *c1)
{
}
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