"Implicit function error" build failure(s)
clang 5.0
| Package | Version | Supposed error message | Full log | 
Bug report | 
|  budgie-desktop  | 10.3.1-5 | src/applets/budgie-menu/budgiemenuapplet@sha/BudgieMenu.c:844:2: error: implicit declaration of function 'category_button_register_type' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
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|  freetype  | 2.8-0.2 | ttdebug.c:1935:16: error: implicitly declaring library function 'snprintf' with type 'int (char *, unsigned long, const char *, ...)' [-Werror,-Wimplicit-function-declaration]
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|  pixman  | 0.34.0-1 | ../../test/utils-prng.c:207:27: error: use of unknown builtin '__builtin_shuffle' [-Wimplicit-function-declaration]
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|  smpq  | 1.6-1 | append.c:64:15: error: implicit declaration of function 'strcasecmp' [-Werror,-Wimplicit-function-declaration]
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4 errors