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Fix sample closure code

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This commit is contained in:
Andrew Haley
2013-11-16 06:35:51 -05:00
committed by Anthony Green
parent db0ace3a38
commit 31257b3189
5 changed files with 25 additions and 16 deletions
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doc/libffi.texi
+9 -7
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@@ -541,21 +541,23 @@ A trivial example that creates a new @code{puts} by binding
#include <ffi.h>
/* Acts like puts with the file given at time of enclosure. */
void puts_binding(ffi_cif *cif, ffi_arg *ret, void* args[],
FILE *stream)
void puts_binding(ffi_cif *cif, void *ret, void* args[],
void *stream)
@{
*ret = fputs(*(char **)args[0], stream);
*(ffi_arg *)ret = fputs(*(char **)args[0], (FILE *)stream);
@}
typedef int (*puts_t)(char *);
int main()
@{
ffi_cif cif;
ffi_type *args[1];
ffi_closure *closure;
int (*bound_puts)(char *);
void *bound_puts;
int rc;
/* Allocate closure and bound_puts */
closure = ffi_closure_alloc(sizeof(ffi_closure), &bound_puts);
@@ -569,10 +571,10 @@ int main()
&ffi_type_sint, args) == FFI_OK)
@{
/* Initialize the closure, setting stream to stdout */
if (ffi_prep_closure_loc(closure, &cif, puts_binding,
if (ffi_prep_closure_loc(closure, &cif, puts_binding,
stdout, bound_puts) == FFI_OK)
@{
rc = bound_puts("Hello World!");
rc = ((puts_t)bound_puts)("Hello World!");
/* rc now holds the result of the call to fputs */
@}
@}