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Fix segmentation fault in empty repository
When a repository is empty, the ATOM feed link is written in the header, but this involves formatting ctx->qry.head which is NULL in this case. With glibc, vsnprintf formats "%s" with a NULL input as "(null)" but on Solaris this results in a segmentation fault. Since we don't have a meaningful head for the atom feed in an empty repository, it's simplest not to write out the link element at all. Signed-off-by: John Keeping <john@metanate.com>
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@ -619,7 +619,7 @@ void cgit_print_docstart(struct cgit_context *ctx)
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html_attr(ctx->cfg.favicon);
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html("'/>\n");
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}
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if (host && ctx->repo) {
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if (host && ctx->repo && ctx->qry.head) {
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html("<link rel='alternate' title='Atom feed' href='");
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html(cgit_httpscheme());
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html_attr(cgit_hosturl());
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