From 267bbb6fd17860dd09e69493ae031cc3e977301d Mon Sep 17 00:00:00 2001
From: Marek Polacek <polacek@redhat.com>
Date: Wed, 13 Sep 2017 16:46:17 +0000
Subject: [PATCH] re PR c/82167 (Segmentation fault when dereferencing the
address of an array argument)
PR c/82167
* c-typeck.c (c_expr_sizeof_expr): Use the type of expr.value rather
than expr.original_type.
* gcc.dg/pr82167.c: New test.
From-SVN: r252372
---
gcc/c/ChangeLog | 6 ++++++
gcc/c/c-typeck.c | 2 +-
gcc/testsuite/ChangeLog | 5 +++++
gcc/testsuite/gcc.dg/pr82167.c | 14 ++++++++++++++
4 files changed, 26 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.dg/pr82167.c
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index d55b5ac42e48..957daeb4fe99 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,9 @@
+2017-09-13 Marek Polacek <polacek@redhat.com>
+
+ PR c/82167
+ * c-typeck.c (c_expr_sizeof_expr): Use the type of expr.value rather
+ than expr.original_type.
+
2017-09-12 Nathan Sidwell <nathan@acm.org>
* c-decl.c (field_decl_cmp, resort_data, resort_field_decl_cmp,
diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c
index 91996c95ed07..f45fd3cfbbf0 100644
--- a/gcc/c/c-typeck.c
+++ b/gcc/c/c-typeck.c
@@ -2909,7 +2909,7 @@ c_expr_sizeof_expr (location_t loc, struct c_expr expr)
if (warning_at (loc, OPT_Wsizeof_array_argument,
"%<sizeof%> on array function parameter %qE will "
"return size of %qT", expr.value,
- expr.original_type))
+ TREE_TYPE (expr.value)))
inform (DECL_SOURCE_LOCATION (expr.value), "declared here");
}
tree folded_expr = c_fully_fold (expr.value, require_constant_value,
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2091f98c11a1..1280e90308b6 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-09-13 Marek Polacek <polacek@redhat.com>
+
+ PR c/82167
+ * gcc.dg/pr82167.c: New test.
+
2017-09-13 Will Schmidt <will_schmidt@vnet.ibm.com>
* gcc.target/powerpc/fold-vec-ld-char.c: New.
diff --git a/gcc/testsuite/gcc.dg/pr82167.c b/gcc/testsuite/gcc.dg/pr82167.c
new file mode 100644
index 000000000000..af3b3a5a1c95
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr82167.c
@@ -0,0 +1,14 @@
+/* PR c/82167 */
+/* { dg-do compile } */
+
+void
+fn1 (int a[])
+{
+ __builtin_printf ("%zu\n", sizeof (*&a)); /* { dg-warning ".sizeof. on array function parameter .a. will return size of .int \\*." } */
+}
+
+void
+fn2 (int *a[])
+{
+ __builtin_printf ("%zu\n", sizeof (*&a)); /* { dg-warning ".sizeof. on array function parameter .a. will return size of .int \\*\\*." } */
+}
--
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