28 lines
969 B
Diff
28 lines
969 B
Diff
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commit 92d5c52aaac0fa8e58b92e96bf2025d6848a2845
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Author: Martin Sebor <msebor@redhat.com>
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Date: Mon Oct 11 09:36:57 2021 -0600
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resolv: Avoid GCC 12 false positive warning [BZ #28439].
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Replace a call to sprintf with an equivalent pair of stpcpy/strcpy calls
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to avoid a GCC 12 -Wformat-overflow false positive due to recent optimizer
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improvements.
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(cherry picked from commit eb73b87897798de981dbbf019aa957045d768adb)
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diff --git a/resolv/res_query.c b/resolv/res_query.c
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index 2f3c28cfc8c0d832..1d2c81737bc889c9 100644
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--- a/resolv/res_query.c
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+++ b/resolv/res_query.c
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@@ -626,7 +626,9 @@ __res_context_querydomain (struct resolv_context *ctx,
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RES_SET_H_ERRNO(statp, NO_RECOVERY);
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return (-1);
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}
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- sprintf(nbuf, "%s.%s", name, domain);
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+ char *p = __stpcpy (nbuf, name);
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+ *p++ = '.';
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+ strcpy (p, domain);
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}
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return __res_context_query (ctx, longname, class, type, answer,
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anslen, answerp, answerp2, nanswerp2,
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