18 lines
809 B
Diff
18 lines
809 B
Diff
diff -ur db-6.2.23-orig/src/blob/blob_util.c db-6.2.23/src/blob/blob_util.c
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--- db-6.2.23-orig/src/blob/blob_util.c 2016-03-28 20:45:53.000000000 +0100
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+++ db-6.2.23/src/blob/blob_util.c 2021-07-30 19:52:37.082811600 +0100
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@@ -544,7 +544,12 @@
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goto err;
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memset(path, 0, len);
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- name_len += sprintf(path, "%s", blob_sub_dir);
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+ // Clang 12 introduced an "libcall optimization" that lowers the above
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+ // to stpcpy to avoid the machinery involved in parsing format strings.
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+ // This causes build problems when cross-compiling to Windows with the
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+ // version of mingw-w64 that Zcash supports. We haven't figured out why
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+ // but in the meantime using "%s%s" inhibits the optimization.
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+ name_len += sprintf(path, "%s%s", blob_sub_dir, "");
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__blob_calculate_dirs(blob_id, path, &name_len, &depth);
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