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refs.c: off-by-one fix.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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refs.c
7
refs.c
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@ -346,8 +346,11 @@ int check_ref_format(const char *ref)
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if (level < 2)
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return -1; /* at least of form "heads/blah" */
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/* do not allow ref name to end in "HEAD" */
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if (cp - ref > 4 && !strcmp(cp - 4, "HEAD"))
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/* Do not allow ref name to end in "HEAD"
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* Note that cp is poiting at one past NUL at the end.
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* i.e. cp[-1] = NUL.
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*/
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if (5 <= cp - ref && !strcmp(cp - 5, "HEAD"))
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return -1;
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return 0;
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