[all-commits] [llvm/llvm-project] 7326e9: flang: fix backtrace build on FreeBSD (#120297)

[Brooks Davis via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7326e903d72ba390a6368ff3e9eb2ab2251a1b13
      https://github.com/llvm/llvm-project/commit/7326e903d72ba390a6368ff3e9eb2ab2251a1b13
  Author: Brooks Davis <brooks at one-eyed-alien.net>
  Date:   2025-01-02 (Thu, 02 Jan 2025)

  Changed paths:
    M flang/runtime/stop.cpp

  Log Message:
  -----------
  flang: fix backtrace build on FreeBSD (#120297)

FreeBSD's libexecinfo defines backtrace with a size_t for the size
argument and return type. This almost certainly doesn't make sense, but
what's done is done so cast the output to allow compilation. Otherwise
we get:

.../flang/runtime/stop.cpp:165:13: error: non-constant-expression cannot
be narrowed from type 'size_t' (aka 'unsigned long') to 'int' in
initializer list [-Wc++11-narrowing]
  165 |   int nptrs{backtrace(buffer, MAX_CALL_STACK)};
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



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