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Fix __getreent function for Cygwin

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So far the lib function __getreent always returned _impure_ptr.  On Cygwin
this is only correct after _impure_ptr got initialized.  The inline
function in include/cygwin/config.h always returns the right _reent ptr,
though.

After introducing per-thread locales, the __getreent function is called
prior to initialization of _impure_ptr (from dll_crt0_0) to access the
locale pointer, which leads to a crash.

Fix the __getreent lib function for Cygwin to return the correct _reent
pointer all the time.  Rename inline function to __inline_getreent
and introduce a macro __getreent calling the inline function.  Change
the lib function __getreent to call __inline_getreent on Cygwin.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2016-08-18 10:27:14 +02:00
parent 0e2e3c958c
commit 4de8596b8e
2 changed files with 8 additions and 2 deletions
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3
winsup/cygwin/include/cygwin/config.h
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@ -42,7 +42,7 @@ extern "C" {
#include "../tlsoffsets.h"
#endif
__attribute__((gnu_inline))
extern inline struct _reent *__getreent (void)
extern inline struct _reent *__inline_getreent (void)
{
register char *ret;
#ifdef __x86_64__
@ -52,6 +52,7 @@ extern inline struct _reent *__getreent (void)
#endif
return (struct _reent *) (ret + tls_local_clib);
}
#define __getreent() __inline_getreent()
#endif /* _COMPILING_NEWLIB */
#ifdef __x86_64__