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-rw-r--r--include/stdlib.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/stdlib.h b/include/stdlib.h
index d3c8779fcd..41c5b780ed 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -40,7 +40,7 @@ extern int __drand48_iterate (unsigned short int __xsubi[3],
extern int __setenv (__const char *__name, __const char *__value,
int __replace);
-extern void __unsetenv (__const char *__name);
+extern int __unsetenv (__const char *__name);
extern int __clearenv (void);
extern char *__canonicalize_file_name (__const char *__name);
extern char *__realpath (__const char *__name, char *__resolved);