[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012

Ian Lance Taylor  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|UNCONFIRMED |RESOLVED

--- Comment #5 from Ian Lance Taylor  ---
Thanks, should be fixed on master.

[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012

--- Comment #4 from CVS Commits  ---
The master branch has been updated by Ian Lance Taylor :

https://gcc.gnu.org/g:47f4703c33c4936fd423c2a1180b2de144115d3d

commit r11-280-g47f4703c33c4936fd423c2a1180b2de144115d3d
Author: Ian Lance Taylor 
Date:   Mon May 11 10:51:21 2020 -0700

libbacktrace: declare getpagesize if necessary

libbacktrace/
PR libbacktrace/95012
* configure.ac: Check for getpagesize declaration.
* mmap.c: Declare getpagesize if necessary.
* mmapio.c: Likewise.

[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’

[xantares09 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012

--- Comment #3 from xantares09 at hotmail dot com ---
mingw does not define getpagesize as far as I can tell with:
$ grep -nr getpagesize /usr/i686-w64-mingw32/include/

but gcc seems to detect it (9.x and 10.x):
checking for getpagesize... (cached) yes

maybe it relies on its own provided getpagesize function:
gcc/system.h:479:#if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
gcc/system.h:480:extern int getpagesize (void);

[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012

Ian Lance Taylor  changed:

   What|Removed |Added

 CC||ian at airs dot com

--- Comment #2 from Ian Lance Taylor  ---
Thanks for the bug report.  I can't see any relevant change in libbacktrace. 
As far as I can tell the call to getpagesize has been there for a while, and
the use of -Werror has been there for a while.

Does mingw-w64-gcc have a getpagesize function?  What header file declares it? 
Normally it is declared in , but mmapio.c does #include that file.

[Bug libbacktrace/95012] [mingw/gcc10.1] mmapio.c:69:14: error: implicit declaration of function ‘getpagesize’

[xantares09 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95012

--- Comment #1 from xantares09 at hotmail dot com ---
the full compilation script can be seen here:
https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=mingw-w64-gcc