diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0005-Backport-from-mainline.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0005-Backport-from-mainline.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0005-Backport-from-mainline.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0005-Backport-from-mainline.patch new file mode 100644 index 0000000000..08d825153c --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0005-Backport-from-mainline.patch @@ -0,0 +1,94 @@ +From 5bc59e25607b755798008d5e0d79ca4cea6711ed Mon Sep 17 00:00:00 2001 +From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Sat, 26 Mar 2011 09:23:01 +0000 +Subject: [PATCH 005/200] Backport from mainline + 2011-03-20 Jakub Jelinek <jakub@redhat.com> + + PR c/42544 + PR c/48197 + * c-common.c (shorten_compare): If primopN is first sign-extended + to opN and then zero-extended to result type, set primopN to opN. + + * gcc.c-torture/execute/pr42544.c: New test. + * gcc.c-torture/execute/pr48197.c: New test. + + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@171548 138bc75d-0d04-0410-961f-82ee72b054a4 + +index 4da9a2d..c0c01b2 100644 +--- a/gcc/c-family/c-common.c ++++ b/gcc/c-family/c-common.c +@@ -3300,6 +3300,20 @@ shorten_compare (tree *op0_ptr, tree *op1_ptr, tree *restype_ptr, + primop0 = get_narrower (op0, &unsignedp0); + primop1 = get_narrower (op1, &unsignedp1); + ++ /* If primopN is first sign-extended from primopN's precision to opN's ++ precision, then zero-extended from opN's precision to ++ *restype_ptr precision, shortenings might be invalid. */ ++ if (TYPE_PRECISION (TREE_TYPE (primop0)) < TYPE_PRECISION (TREE_TYPE (op0)) ++ && TYPE_PRECISION (TREE_TYPE (op0)) < TYPE_PRECISION (*restype_ptr) ++ && !unsignedp0 ++ && TYPE_UNSIGNED (TREE_TYPE (op0))) ++ primop0 = op0; ++ if (TYPE_PRECISION (TREE_TYPE (primop1)) < TYPE_PRECISION (TREE_TYPE (op1)) ++ && TYPE_PRECISION (TREE_TYPE (op1)) < TYPE_PRECISION (*restype_ptr) ++ && !unsignedp1 ++ && TYPE_UNSIGNED (TREE_TYPE (op1))) ++ primop1 = op1; ++ + /* Handle the case that OP0 does not *contain* a conversion + but it *requires* conversion to FINAL_TYPE. */ + +new file mode 100644 +index 0000000..c5951b0 +--- /dev/null ++++ b/gcc/testsuite/gcc.c-torture/execute/pr42544.c +@@ -0,0 +1,14 @@ ++/* PR c/42544 */ ++ ++extern void abort (void); ++ ++int ++main () ++{ ++ signed short s = -1; ++ if (sizeof (long long) == sizeof (unsigned int)) ++ return 0; ++ if ((unsigned int) s >= 0x100000000ULL) ++ abort (); ++ return 0; ++} +diff --git a/gcc/testsuite/gcc.c-torture/execute/pr48197.c b/gcc/testsuite/gcc.c-torture/execute/pr48197.c +new file mode 100644 +index 0000000..37812c0 +--- /dev/null ++++ b/gcc/testsuite/gcc.c-torture/execute/pr48197.c +@@ -0,0 +1,25 @@ ++/* PR c/48197 */ ++ ++extern void abort (void); ++static int y = 0x8000; ++ ++int ++main () ++{ ++ unsigned int x = (short)y; ++ if (sizeof (0LL) == sizeof (0U)) ++ return 0; ++ if (0LL > (0U ^ (short)-0x8000)) ++ abort (); ++ if (0LL > (0U ^ x)) ++ abort (); ++ if (0LL > (0U ^ (short)y)) ++ abort (); ++ if ((0U ^ (short)-0x8000) < 0LL) ++ abort (); ++ if ((0U ^ x) < 0LL) ++ abort (); ++ if ((0U ^ (short)y) < 0LL) ++ abort (); ++ return 0; ++} +-- +1.7.0.4 + |