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.

4 files changed, 85 insertions, 1 deletions

diff --git a/libcpp/config.in b/libcpp/config.in
index 89aa6a1..9983aee 100644
--- a/libcpp/config.in
+++ b/libcpp/config.in
@@ -258,6 +258,12 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
+/* The size of `dev_t', as computed by sizeof. */
+#undef SIZEOF_DEV_T
+
+/* The size of `ino_t', as computed by sizeof. */
+#undef SIZEOF_INO_T
+
 /* The size of `int', as computed by sizeof. */
 #undef SIZEOF_INT
 
diff --git a/libcpp/configure b/libcpp/configure
index 2797292..7514539 100755
--- a/libcpp/configure
+++ b/libcpp/configure
@@ -6644,6 +6644,73 @@ $as_echo "#define HAVE_UCHAR 1" >>confdefs.h
 
 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 :
+  $as_echo_n "(cached) " >&6
+else
+  if ac_fn_c_compute_int "$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 :
+  $as_echo_n "(cached) " >&6
+else
+  if ac_fn_c_compute_int "$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
+
+
+
 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
 # iconv() prototype.
 ac_ext=cpp
diff --git a/libcpp/configure.ac b/libcpp/configure.ac
index bc2373c..9b60425 100644
--- a/libcpp/configure.ac
+++ b/libcpp/configure.ac
@@ -103,6 +103,9 @@ if test $ac_cv_type_uchar = yes; then
   [Define if <sys/types.h> defines \`uchar'.])
 fi
 
+AC_CHECK_SIZEOF(ino_t)
+AC_CHECK_SIZEOF(dev_t)
+
 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
 # iconv() prototype.
 AC_LANG_PUSH([C++])
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
index cb7ec17..ebf6fcc 100644
--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
@@ -752,10 +752,18 @@ struct cpp_callbacks
 
 #ifdef VMS
 #define INO_T_CPP ino_t ino[3]
+#elif defined (_AIX) && SIZEOF_INO_T == 4
+#define INO_T_CPP ino64_t ino
 #else
 #define INO_T_CPP ino_t ino
 #endif
 
+#if defined (_AIX) && SIZEOF_DEV_T == 4
+#define DEV_T_CPP dev64_t dev
+#else
+#define DEV_T_CPP dev_t dev
+#endif
+
 /* Chain of directories to look for include files in.  */
 struct cpp_dir
 {
@@ -790,7 +798,7 @@ struct cpp_dir
   /* The C front end uses these to recognize duplicated
      directories in the search path.  */
   INO_T_CPP;
-  dev_t dev;
+  DEV_T_CPP;
 };
 
 /* The kind of the cpp_macro.  */