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-rw-r--r--include/string.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/string.h b/include/string.h
index 351b32a..b69c8a5 100644
--- a/include/string.h
+++ b/include/string.h
@@ -73,7 +73,7 @@ char* strerror(int)
char* strerror_l(int, locale_t);
-#ifndef _PORTABLE_SOURCE
+#if !defined(_PORTABLE_SOURCE) && !defined(_SLIBC_SOURCE)
/**
* Reenterant variant of `stderror`.
*
@@ -81,6 +81,7 @@ char* strerror_l(int, locale_t);
* is not part of the XSI specification, `strerror_r`
* should be used. It is defined to this function if
* `(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE`.
+ * However it is not defined if _SLIBC_SOURCE is defined.
*
* @param errnum The error code.
* @param buf Buffer where the description shall be stored.
@@ -98,6 +99,7 @@ int __xsi_strerror_r(int, char*, size_t); /* XSI-compliant strerror_r */
* is not part of the GNU specification, `strerror_r` should
* be used. It is defined to this function unless
* `(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE`.
+ * However it is not defined if _SLIBC_SOURCE is defined.
*
* @param errnum The error code.
* @param buf Buffer where the description shall be stored.