aix: handle 64bit inodes for include directories

On AIX, stat will store inodes in 32bit even when using LARGE_FILES.
If the inode is larger, it will return -1 in st_ino.
Thus, in incpath.c when comparing include directories, if several
of them have 64bit inodes, they will be considered as duplicated.

gcc/ChangeLog:
2022-01-12  Clément Chigot  <clement.chigot@atos.net>

	* configure.ac: Check sizeof ino_t and dev_t.
	(HOST_STAT_FOR_64BIT_INODES): New AC_DEFINE to provide stat
	syscall being able to handle 64bit inodes.
	* config.in: Regenerate.
	* configure: Regenerate.
	* incpath.c (HOST_STAT_FOR_64BIT_INODES): New define.
	(remove_duplicates): Use it.

libcpp/ChangeLog:
2022-01-12  Clément Chigot  <clement.chigot@atos.net>

	* configure.ac: Check sizeof ino_t and dev_t.
	* config.in: Regenerate.
	* configure: Regenerate.
	* include/cpplib.h (INO_T_CPP): Change for AIX.
	(DEV_T_CPP): New macro.
	(struct cpp_dir): Use it.

1 files changed, 81 insertions, 2 deletions

diff --git a/gcc/configure b/gcc/configure
index 992a9d7..d19059e 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -6302,6 +6302,85 @@ rm -rf conftest*
 
 fi
 
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of ino_t" >&5
+$as_echo_n "checking size of ino_t... " >&6; }
+if ${ac_cv_sizeof_ino_t+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if ac_fn_cxx_compute_int "$LINENO" "(long int) (sizeof (ino_t))" "ac_cv_sizeof_ino_t"        "$ac_includes_default"; then :
+
+else
+  if test "$ac_cv_type_ino_t" = yes; then
+     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (ino_t)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_ino_t=0
+   fi
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_ino_t" >&5
+$as_echo "$ac_cv_sizeof_ino_t" >&6; }
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_INO_T $ac_cv_sizeof_ino_t
+_ACEOF
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of dev_t" >&5
+$as_echo_n "checking size of dev_t... " >&6; }
+if ${ac_cv_sizeof_dev_t+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if ac_fn_cxx_compute_int "$LINENO" "(long int) (sizeof (dev_t))" "ac_cv_sizeof_dev_t"        "$ac_includes_default"; then :
+
+else
+  if test "$ac_cv_type_dev_t" = yes; then
+     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (dev_t)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_dev_t=0
+   fi
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_dev_t" >&5
+$as_echo "$ac_cv_sizeof_dev_t" >&6; }
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_DEV_T $ac_cv_sizeof_dev_t
+_ACEOF
+
+
+
+# Select the right stat being able to handle 64bit inodes, if needed.
+if test "$enable_largefile" != no; then
+  case "$host, $build" in
+    *-*-aix*,*|*,*-*-aix*)
+      if test "$ac_cv_sizeof_ino_t" == "4" -a "$ac_cv_sizeof_dev_t" == 4; then
+
+$as_echo "#define HOST_STAT_FOR_64BIT_INODES stat64x" >>confdefs.h
+
+      fi;;
+  esac
+fi
+
 
 # sizeof(char) is 1 by definition.
 # The cast to long int works around a bug in the HP C Compiler
@@ -19561,7 +19640,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 19564 "configure"
+#line 19643 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -19667,7 +19746,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 19670 "configure"
+#line 19749 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H