[MacPorts] #61208: aalib: error: implicitly declaring library function 'exit' with type 'void (int) __attribute__((noreturn))' (was: aalib failure to build: warning: unsequenced modification and access to 'p1')

[MacPorts]

#61208: aalib: error: implicitly declaring library function 'exit' with type 'void
(int) __attribute__((noreturn))'
---------------------------+------------------------
  Reporter:  chicagotripp  |      Owner:  ryandesign
      Type:  defect        |     Status:  accepted
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  aalib         |
---------------------------+------------------------
Changes (by ryandesign):

 * status:  new => accepted
 * owner:  (none) => ryandesign


Comment:

 The relevant error in the log is:

 {{{
 :info:build aainfo.c:12:2: error: implicitly declaring library function
 'exit' with type 'void (int) __attribute__((noreturn))' [-Werror
 ,-Wimplicit-function-declaration]
 :info:build         exit(1);
 :info:build         ^
 :info:build aainfo.c:12:2: note: include the header <stdlib.h> or
 explicitly provide a declaration for 'exit'
 :info:build 1 error generated.
 }}}

 Implicitly declared functions are a new error in Xcode 12 that we're
 working our way through fixing. For Catalina you could avoid the problem
 by downgrading to Xcode 11 but for Big Sur you don't have that option and
 have to wait until it's fixed.

-- 
Ticket URL: <https://trac.macports.org/ticket/61208#comment:2>
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