[Bug 255698] dlerror() returns non-NULL after a successful call to dlopen()/dlsym()

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255698

--- Comment #7 from Konstantin Belousov <kib at FreeBSD.org> ---
The following should fix the initial dlerror() state.

diff --git a/libexec/rtld-elf/rtld_lock.c b/libexec/rtld-elf/rtld_lock.c
index 94e931c2f760..e501c03f0722 100644
--- a/libexec/rtld-elf/rtld_lock.c
+++ b/libexec/rtld-elf/rtld_lock.c
@@ -60,7 +60,7 @@ void _rtld_atfork_pre(int *) __exported;
 void _rtld_atfork_post(int *) __exported;

 static char def_dlerror_msg[512];
-static int def_dlerror_seen_val;
+static int def_dlerror_seen_val = 1;

 static char *
 def_dlerror_loc(void)

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