Hi!
The following patch adds testcase coverage to make sure
-f{,no-}sanitize{,-recover}= options are all passed to the compiler backend
from the driver.
All these tests were broken by the earlier option handling patch from H.J.:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00492.html
and as nothing in the testsuite revealed the patch broke this, I think we
want to cover this in the testsuite.
Tested on x86_64-linux with
make check-gcc check-c++-all RUNTESTFLAGS='--target_board=unix\{-m32,-m64\}
ubsan.exp=opts*'
with current trunk (all tests PASS) and with trunk patched with the above
patch (all tests FAIL). Ok for trunk?
2019-02-14 Jakub Jelinek <[email protected]>
* c-c++-common/ubsan/opts-1.c: New test.
* c-c++-common/ubsan/opts-2.c: New test.
* c-c++-common/ubsan/opts-3.c: New test.
* c-c++-common/ubsan/opts-4.c: New test.
--- gcc/testsuite/c-c++-common/ubsan/opts-1.c.jj 2019-02-14
11:31:33.144895232 +0100
+++ gcc/testsuite/c-c++-common/ubsan/opts-1.c 2019-02-14 11:33:23.049077585
+0100
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-fsanitize=undefined -fsanitize=shift
-fsanitize=float-divide-by-zero -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump-times "__ubsan_handle_divrem_overflow" 2
"optimized" } } */
+/* { dg-final { scan-tree-dump-times "__ubsan_handle_shift_out_of_bounds" 1
"optimized" } } */
+
+int
+foo (int x, int y)
+{
+ return x / y;
+}
+
+int
+bar (int x, int y)
+{
+ return x << y;
+}
+
+float
+baz (float x, float y)
+{
+ return x / y;
+}
--- gcc/testsuite/c-c++-common/ubsan/opts-2.c.jj 2019-02-14
11:33:29.806965829 +0100
+++ gcc/testsuite/c-c++-common/ubsan/opts-2.c 2019-02-14 11:34:03.169414166
+0100
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-fsanitize=undefined -fno-sanitize=shift
-fsanitize=float-divide-by-zero -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump-times "__ubsan_handle_divrem_overflow" 2
"optimized" } } */
+/* { dg-final { scan-tree-dump-not "__ubsan_handle_shift_out_of_bounds"
"optimized" } } */
+
+int
+foo (int x, int y)
+{
+ return x / y;
+}
+
+int
+bar (int x, int y)
+{
+ return x << y;
+}
+
+float
+baz (float x, float y)
+{
+ return x / y;
+}
--- gcc/testsuite/c-c++-common/ubsan/opts-3.c.jj 2019-02-14
11:34:10.538292322 +0100
+++ gcc/testsuite/c-c++-common/ubsan/opts-3.c 2019-02-14 11:34:35.512879358
+0100
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-fsanitize=undefined -fno-sanitize=shift
-fno-sanitize=float-divide-by-zero -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump-times "__ubsan_handle_divrem_overflow" 1
"optimized" } } */
+/* { dg-final { scan-tree-dump-not "__ubsan_handle_shift_out_of_bounds"
"optimized" } } */
+
+int
+foo (int x, int y)
+{
+ return x / y;
+}
+
+int
+bar (int x, int y)
+{
+ return x << y;
+}
+
+float
+baz (float x, float y)
+{
+ return x / y;
+}
--- gcc/testsuite/c-c++-common/ubsan/opts-4.c.jj 2019-02-14
11:40:35.771922337 +0100
+++ gcc/testsuite/c-c++-common/ubsan/opts-4.c 2019-02-14 11:40:29.220030674
+0100
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-fsanitize=undefined
-fno-sanitize-recover=integer-divide-by-zero -fno-sanitize-recover=shift
-fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump-times "__ubsan_handle_divrem_overflow_abort" 1
"optimized" } } */
+/* { dg-final { scan-tree-dump-times
"__ubsan_handle_shift_out_of_bounds_abort" 1 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "__ubsan_handle_type_mismatch_v1" 1
"optimized" } } */
+/* { dg-final { scan-tree-dump-not "__ubsan_handle_type_mismatch_v1_abort"
"optimized" } } */
+
+int
+foo (int x, int y)
+{
+ return x / y;
+}
+
+int
+bar (int x, int y)
+{
+ return x << y;
+}
+
+enum E { E0, E1, E2, E3 };
+
+enum E
+baz (enum E *x)
+{
+ return *x;
+}
Jakub
