wasi-libc/libc-top-half/musl/include/errno.h
Dan Gohman e5f14be383 Add comments explaining changes to upstream source files.
Add at least a one-line comment on every
`#ifdef __wasilibc_unmodified_upstream` briefly indicating what its
purpose is.

While here, reenable some of the code that was previously disabled when
getenv wasn't supported, as getenv is now supported.
2019-04-05 06:39:09 -07:00

33 lines
507 B
C

#ifndef _ERRNO_H
#define _ERRNO_H
#ifdef __cplusplus
extern "C" {
#endif
#include <features.h>
#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
#include <bits/errno.h>
#ifdef __GNUC__
__attribute__((const))
#endif
int *__errno_location(void);
#define errno (*__errno_location())
#else
#include <__errno.h>
#include <__errno_values.h>
#endif
#ifdef _GNU_SOURCE
extern char *program_invocation_short_name, *program_invocation_name;
#endif
#ifdef __cplusplus
}
#endif
#endif