GCC 6 reports “implicit declaration of function ‘getpid’”

[bignose-debian]

When compiling with GCC version 6, the compiler warns about an implicit function declaration:

$ gcc --version
gcc (Debian 6.1.1-11) 6.1.1 20160802
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ gcc -DUNIX64 -c -o inform.o inform.c
In file included from inform.c:11:0:
header.h: In function ‘unique_task_id’:
header.h:457:19: warning: implicit declaration of function ‘getpid’ [-Wimplicit-function-declaration]
 {   return (int32)getpid();
                   ^~~~~~

This indicates an existing problem (functions should be explicitly declared) that was not being reported by some earlier compiler versions.

[erkyrath]

This should already be fixed in my development tree (https://github.com/erkyrath/inform6). David has not yet merged this change.

See http://inform7.com/mantis/view.php?id=1937 for more discussion. In particular, -DUNIX64 is changing to just -DUNIX .

[bignose-debian]

@DavidKinder, is this closed because there's a commit which fixes it? Which commit?

[erkyrath]

55ec5ec

[erkyrath]

Specifically the added "#include <unistd.h>" line.