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bpo-46968: Check for 'sys/auxv.h' in the configure script #31961

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Mar 18, 2022
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bpo-46968: Check for 'sys/auxv.h' in the configure script #31961

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39123b0
bpo-46968: Check for 'sys/auxv.h' in the configure script
pablogsal Mar 17, 2022
3fd6426
Update Modules/faulthandler.c
pablogsal Mar 17, 2022
1488358
Update Modules/faulthandler.c
pablogsal Mar 18, 2022
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2022-03-17-14-22-23.bpo-46968.4gz4NA.rst
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@@ -0,0 +1,3 @@
Check for the existence of the "sys/auxv.h" header in :mod:`faulthandler` to
avoid compilation problems in systems where this header doesn't exist. Patch
by Pablo Galindo
6 changes: 3 additions & 3 deletions Modules/faulthandler.c
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Expand Up @@ -26,9 +26,9 @@
# define FAULTHANDLER_USE_ALT_STACK
#endif

#if defined(FAULTHANDLER_USE_ALT_STACK) && defined(HAVE_LINUX_AUXVEC_H)
# include <linux/auxvec.h>
# include <sys/auxv.h>
#if defined(FAULTHANDLER_USE_ALT_STACK) && defined(HAVE_LINUX_AUXVEC_H) && defined(HAVE_SYS_AUXV_H)
# include <linux/auxvec.h> // AT_MINSIGSTKSZ
# include <sys/auxv.h> // getauxval()
#endif

/* Allocate at maximum 100 MiB of the stack to raise the stack overflow */
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2 changes: 1 addition & 1 deletion configure
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2 changes: 1 addition & 1 deletion configure.ac
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Expand Up @@ -2375,7 +2375,7 @@ AC_DEFINE(STDC_HEADERS, 1, [Define to 1 if you have the ANSI C header files.])
# checks for header files
AC_CHECK_HEADERS([ \
alloca.h asm/types.h bluetooth.h conio.h crypt.h direct.h dlfcn.h endian.h errno.h fcntl.h grp.h \
ieeefp.h io.h langinfo.h libintl.h libutil.h linux/auxvec.h linux/memfd.h linux/random.h linux/soundcard.h \
ieeefp.h io.h langinfo.h libintl.h libutil.h linux/auxvec.h sys/auxv.h linux/memfd.h linux/random.h linux/soundcard.h \
linux/tipc.h linux/wait.h netinet/in.h netpacket/packet.h poll.h process.h pthread.h pty.h \
sched.h setjmp.h shadow.h signal.h spawn.h stropts.h sys/audioio.h sys/bsdtty.h sys/devpoll.h \
sys/endian.h sys/epoll.h sys/event.h sys/eventfd.h sys/file.h sys/ioctl.h sys/kern_control.h \
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3 changes: 3 additions & 0 deletions pyconfig.h.in
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Expand Up @@ -1188,6 +1188,9 @@
/* Define to 1 if you have the <sys/audioio.h> header file. */
#undef HAVE_SYS_AUDIOIO_H

/* Define to 1 if you have the <sys/auxv.h> header file. */
#undef HAVE_SYS_AUXV_H

/* Define to 1 if you have the <sys/bsdtty.h> header file. */
#undef HAVE_SYS_BSDTTY_H

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