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Patch to fix -Werror=format-security related build failure
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--- barcode-0.98/plessey.c			2000-11-07 18:43:18.000000000 +0100
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+++ barcode-0.98/plessey.c.format-security	2017-08-03 23:54:16.724730732 +0200
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@@ -148,7 +148,7 @@
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                         checkptr[i+j] ^= check[j];
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     }
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     for (i = 0; i < 8; i++) {
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-        sprintf(ptr, patterns[checkptr[strlen(text) * 4 + i]]);
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+        sprintf(ptr, "%s", patterns[checkptr[strlen(text) * 4 + i]]);
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 	ptr += 2;
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     }
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     fprintf(stderr, "CRC: ");