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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-05-14 17:44:15 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-07-07 14:10:58 -0300
commit28aff047818eb1726394296d27b9c7885340bead (patch)
tree5737f4a11497ea9dbe00982d12688ede57eff0a6 /include/string.h
parent9deec7c8bab24659e78172dd850f4ca37c57940c (diff)
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string: Implement strerror in terms of strerror_l
If the thread is terminated then __libc_thread_freeres will free the
storage via __glibc_tls_internal_free.

It is only within the calling thread that this matters.  It makes
strerror MT-safe.

Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
and s390x-linux-gnu.

Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'include/string.h')
-rw-r--r--include/string.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h
index 4d622f1c03..3a33327cc0 100644
--- a/include/string.h
+++ b/include/string.h
@@ -4,6 +4,7 @@
 /* Some of these are defined as macros in the real string.h, so we must
    prototype them before including it.  */
 #include <sys/types.h>
+#include <locale.h>
 
 extern void *__memccpy (void *__dest, const void *__src,
 			int __c, size_t __n);
@@ -50,6 +51,8 @@ extern int __ffs (int __i) __attribute__ ((const));
 
 extern char *__strerror_r (int __errnum, char *__buf, size_t __buflen);
 
+extern char *__strerror_l (int __errnum, locale_t __loc);
+
 /* Called as part of the thread shutdown sequence.  */
 void __strerror_thread_freeres (void) attribute_hidden;
 
@@ -113,6 +116,7 @@ libc_hidden_proto (memmem)
 extern __typeof (memmem) __memmem;
 libc_hidden_proto (__memmem)
 libc_hidden_proto (__ffs)
+libc_hidden_proto (__strerror_l)
 
 #if IS_IN (libc)
 /* Avoid hidden reference to IFUNC symbol __explicit_bzero_chk.  */