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Hi! As __chk_fail is noreturn, but __libc_message is not (depending on arguments, it either returns or does not), we need this trick to shut GCC up. __libc_fatal already uses the same. 2005-02-11 Jakub Jelinek <jakub@redhat.com> * debug/chk_fail.c (__chk_fail): Add a while (1) loop around __libc_message to kill GCC warning about noreturn function returning. --- libc/debug/chk_fail.c.jj 2005-02-07 10:20:54.000000000 +0100 +++ libc/debug/chk_fail.c 2005-02-11 16:03:47.271886099 +0100 @@ -26,7 +26,9 @@ void __attribute__ ((noreturn)) __chk_fail (void) { - __libc_message (1, "*** buffer overflow detected ***: %s terminated\n", - __libc_argv[0] ?: "<unknown>"); + /* The loop is added only to keep gcc happy. */ + while (1) + __libc_message (1, "*** buffer overflow detected ***: %s terminated\n", + __libc_argv[0] ?: "<unknown>"); } libc_hidden_def (__chk_fail) Jakub
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