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PR testsuite/92829 - several -Wstringop-overflow test case failures on powerpc64

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* g++.dg/warn/Wstringop-overflow-4.C: Adjust test to avoid failures
	due to an aparrent VRP limtation.
	* gcc.dg/Wstringop-overflow-25.c: Same.
This commit is contained in:
Martin Sebor 2020-01-20 14:53:33 +01:00
parent a5d8a40617
commit 414231ba78
3 changed files with 28 additions and 9 deletions
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7
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,10 @@
2020-01-20 Martin Sebor <msebor@redhat.com>
PR testsuite/92829
* g++.dg/warn/Wstringop-overflow-4.C: Adjust test to avoid failures
due to an aparrent VRP limtation.
* gcc.dg/Wstringop-overflow-25.c: Same.
2020-01-20 Nathan Sidwell <nathan@acm.org>
PR preprocessor/80005

16
gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C
View file

@ -98,13 +98,19 @@ void test_strcpy_new_char_array (size_t n)
#ifdef __INT16_TYPE__
// Hack around PR 92829.
#define XUR(min, max) \
(++idx, (vals[idx] < min || max < vals[idx] ? min : vals[idx]))
typedef __INT16_TYPE__ int16_t;
void test_strcpy_new_int16_t (size_t n)
void test_strcpy_new_int16_t (size_t n, const size_t vals[])
{
size_t r_0_1 = UR (0, 1);
size_t r_1_2 = UR (1, 2);
size_t r_2_3 = UR (2, 3);
size_t idx = 0;
size_t r_0_1 = XUR (0, 1);
size_t r_1_2 = XUR (1, 2);
size_t r_2_3 = XUR (2, 3);
T (S (0), new int16_t[r_0_1]);
T (S (1), new int16_t[r_0_1]);
@ -122,7 +128,7 @@ void test_strcpy_new_int16_t (size_t n)
T (S (6), new int16_t[r_2_3]); // { dg-warning "\\\[-Wstringop-overflow" }
T (S (9), new int16_t[r_2_3]); // { dg-warning "\\\[-Wstringop-overflow" }
size_t r_2_smax = UR (2, SIZE_MAX);
size_t r_2_smax = XUR (2, SIZE_MAX);
T (S (0), new int16_t[r_2_smax]);
T (S (1), new int16_t[r_2_smax]);
T (S (2), new int16_t[r_2_smax]);

14
gcc/testsuite/gcc.dg/Wstringop-overflow-25.c
View file

@ -290,11 +290,17 @@ NOIPA void test_strcpy_alloc2_4 (void)
sink (vla); \
} while (0)
NOIPA void test_strcpy_vla (void)
// Hack around PR 92829.
#define XUR(min, max) \
(++idx, (vals[idx] < min || max < vals[idx] ? min : vals[idx]))
NOIPA void test_strcpy_vla (const size_t vals[])
{
size_t r_0_1 = UR (0, 1);
size_t r_1_2 = UR (1, 2);
size_t r_2_3 = UR (2, 3);
size_t idx = 0;
size_t r_0_1 = XUR (0, 1);
size_t r_1_2 = XUR (1, 2);
size_t r_2_3 = XUR (2, 3);
T (char, S (0), r_0_1);
T (char, S (1), r_0_1); // { dg-warning "\\\[-Wstringop-overflow" }