This adds two sanity tests for signed-integer-overflow sanitization.
One variant uses asms to prevent ccp/... from optimizing away the
computations. Nothing in these tests should fail.
Regtested on x86_64-unknown-linux-gnu and powerpc64-unknown-linux-gnu,
ok for trunk?
2013-12-14 Marek Polacek <pola...@redhat.com>
testsuite/
* c-c++-common/ubsan/overflow-1.c: New test.
* c-c++-common/ubsan/overflow-2.c: New test.
--- gcc/testsuite/c-c++-common/ubsan/overflow-1.c.mp 2013-12-14
00:49:07.441347527 +0100
+++ gcc/testsuite/c-c++-common/ubsan/overflow-1.c 2013-12-14
14:06:41.196049371 +0100
@@ -0,0 +1,263 @@
+/* { dg-do run } */
+/* { dg-options "-fsanitize=signed-integer-overflow" } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
+
+#ifndef ASM1
+# define ASM1(a) /* Nothing */
+#endif
+#ifndef ASM2
+# define ASM2(a, b) /* Nothing */
+#endif
+
+#define CHECK(A, B) ({ if ((A) != (B)) __builtin_abort (); })
+
+#define FN1(T1, T2, OP) \
+ ({ \
+ T1 a = 14; \
+ T2 b = 9; \
+ ASM2 (a, b); \
+ a OP b; \
+ })
+
+#define FN2(T, OP) \
+ ({ \
+ T a = 14; \
+ ASM1 (a); \
+ a OP 7; \
+ })
+
+#define FN3(T1, T2, OP) \
+ ({ \
+ T1 a = 4; \
+ T2 b = 1; \
+ ASM2 (a, b); \
+ ~a OP b; \
+ })
+
+#define FN4(T1, T2, OP) \
+ ({ \
+ T1 a = 4; \
+ T2 b = 1; \
+ ASM2 (a, b); \
+ a OP ~b; \
+ })
+
+#define FN5(T) \
+ ({ \
+ T a = 77; \
+ ASM1 (a); \
+ -a; \
+ })
+
+int
+main (void)
+{
+ CHECK (FN1 (char, char, +), 23);
+ CHECK (FN1 (char, char, -), 5);
+ CHECK (FN1 (char, char, *), 126);
+ CHECK (FN1 (unsigned char, unsigned char, +), 23);
+ CHECK (FN1 (unsigned char, unsigned char, -), 5);
+ CHECK (FN1 (unsigned char, unsigned char, *), 126);
+ CHECK (FN1 (short, short, +), 23);
+ CHECK (FN1 (short, short, -), 5);
+ CHECK (FN1 (short, short, *), 126);
+ CHECK (FN1 (unsigned short, unsigned short, +), 23);
+ CHECK (FN1 (unsigned short, unsigned short, -), 5);
+ CHECK (FN1 (unsigned short, unsigned short, *), 126);
+ CHECK (FN1 (int, int, +), 23);
+ CHECK (FN1 (int, int, -), 5);
+ CHECK (FN1 (int, int, *), 126);
+ CHECK (FN1 (unsigned int, unsigned int, +), 23);
+ CHECK (FN1 (unsigned int, unsigned int, -), 5);
+ CHECK (FN1 (unsigned int, unsigned int, *), 126);
+ CHECK (FN1 (long int, long int, +), 23);
+ CHECK (FN1 (long int, long int, -), 5);
+ CHECK (FN1 (long int, long int, *), 126);
+ CHECK (FN1 (unsigned long int, unsigned long int, +), 23);
+ CHECK (FN1 (unsigned long int, unsigned long int, -), 5);
+ CHECK (FN1 (unsigned long int, unsigned long int, *), 126);
+ CHECK (FN1 (long long int, long int, +), 23);
+ CHECK (FN1 (long long int, long int, -), 5);
+ CHECK (FN1 (long long int, long int, *), 126);
+ CHECK (FN1 (unsigned long long int, unsigned long long int, +), 23);
+ CHECK (FN1 (unsigned long long int, unsigned long long int, -), 5);
+ CHECK (FN1 (unsigned long long int, unsigned long long int, *), 126);
+ CHECK (FN1 (int, unsigned char, +), 23);
+ CHECK (FN1 (int, unsigned char, -), 5);
+ CHECK (FN1 (int, unsigned char, *), 126);
+ CHECK (FN1 (unsigned char, int, +), 23);
+ CHECK (FN1 (unsigned char, int, -), 5);
+ CHECK (FN1 (unsigned char, int, *), 126);
+ CHECK (FN1 (int, long int, +), 23);
+ CHECK (FN1 (int, long int, -), 5);
+ CHECK (FN1 (int, long int, *), 126);
+ CHECK (FN1 (long int, int, +), 23);
+ CHECK (FN1 (long int, int, -), 5);
+ CHECK (FN1 (long int, int, *), 126);
+ CHECK (FN1 (unsigned int, int, +), 23);
+ CHECK (FN1 (unsigned int, int, -), 5);
+ CHECK (FN1 (unsigned int, int, *), 126);
+ CHECK (FN1 (int, unsigned int, +), 23);
+ CHECK (FN1 (int, unsigned int, -), 5);
+ CHECK (FN1 (int, unsigned int, *), 126);
+ CHECK (FN1 (unsigned long int, int, +), 23);
+ CHECK (FN1 (unsigned long int, int, -), 5);
+ CHECK (FN1 (unsigned long int, int, *), 126);
+ CHECK (FN1 (int, unsigned long int, +), 23);
+ CHECK (FN1 (int, unsigned long int, -), 5);
+ CHECK (FN1 (int, unsigned long int, *), 126);
+
+ CHECK (FN2 (char, +), 21);
+ CHECK (FN2 (char, -), 7);
+ CHECK (FN2 (char, *), 98);
+ CHECK (FN2 (unsigned char, +), 21);
+ CHECK (FN2 (unsigned char, -), 7);
+ CHECK (FN2 (unsigned char, *), 98);
+ CHECK (FN2 (short, +), 21);
+ CHECK (FN2 (short, -), 7);
+ CHECK (FN2 (short, *), 98);
+ CHECK (FN2 (unsigned short, +), 21);
+ CHECK (FN2 (unsigned short, -), 7);
+ CHECK (FN2 (unsigned short, *), 98);
+ CHECK (FN2 (int, +), 21);
+ CHECK (FN2 (int, -), 7);
+ CHECK (FN2 (int, *), 98);
+ CHECK (FN2 (unsigned int, +), 21);
+ CHECK (FN2 (unsigned int, -), 7);
+ CHECK (FN2 (unsigned int, *), 98);
+ CHECK (FN2 (long int, +), 21);
+ CHECK (FN2 (long int, -), 7);
+ CHECK (FN2 (long int, *), 98);
+ CHECK (FN2 (unsigned long int, +), 21);
+ CHECK (FN2 (unsigned long int, -), 7);
+ CHECK (FN2 (unsigned long int, *), 98);
+ CHECK (FN2 (long long int, +), 21);
+ CHECK (FN2 (long long int, -), 7);
+ CHECK (FN2 (long long int, *), 98);
+ CHECK (FN2 (unsigned long long int, +), 21);
+ CHECK (FN2 (unsigned long long int, -), 7);
+ CHECK (FN2 (unsigned long long int, *), 98);
+
+ CHECK (FN3 (char, char, +), -4);
+ CHECK (FN3 (char, char, -), -6);
+ CHECK (FN3 (char, char, *), -5);
+ CHECK (FN3 (unsigned char, unsigned char, +), -4);
+ CHECK (FN3 (unsigned char, unsigned char, -), -6);
+ CHECK (FN3 (unsigned char, unsigned char, *), -5);
+ CHECK (FN3 (short, short, +), -4);
+ CHECK (FN3 (short, short, -), -6);
+ CHECK (FN3 (short, short, *), -5);
+ CHECK (FN3 (unsigned short, unsigned short, +), -4);
+ CHECK (FN3 (unsigned short, unsigned short, -), -6);
+ CHECK (FN3 (unsigned short, unsigned short, *), -5);
+ CHECK (FN3 (int, int, +), -4);
+ CHECK (FN3 (int, int, -), -6);
+ CHECK (FN3 (int, int, *), -5);
+ CHECK (FN3 (unsigned int, unsigned int, +), -4);
+ CHECK (FN3 (unsigned int, unsigned int, -), -6);
+ CHECK (FN3 (unsigned int, unsigned int, *), -5);
+ CHECK (FN3 (long int, long int, +), -4);
+ CHECK (FN3 (long int, long int, -), -6);
+ CHECK (FN3 (long int, long int, *), -5);
+ CHECK (FN3 (unsigned long int, unsigned long int, +), -4);
+ CHECK (FN3 (unsigned long int, unsigned long int, -), -6);
+ CHECK (FN3 (unsigned long int, unsigned long int, *), -5);
+ CHECK (FN3 (long long int, long int, +), -4);
+ CHECK (FN3 (long long int, long int, -), -6);
+ CHECK (FN3 (long long int, long int, *), -5);
+ CHECK (FN3 (unsigned long long int, unsigned long long int, +), -4);
+ CHECK (FN3 (unsigned long long int, unsigned long long int, -), -6);
+ CHECK (FN3 (unsigned long long int, unsigned long long int, *), -5);
+ CHECK (FN3 (int, unsigned char, +), -4);
+ CHECK (FN3 (int, unsigned char, -), -6);
+ CHECK (FN3 (int, unsigned char, *), -5);
+ CHECK (FN3 (unsigned char, int, +), -4);
+ CHECK (FN3 (unsigned char, int, -), -6);
+ CHECK (FN3 (unsigned char, int, *), -5);
+ CHECK (FN3 (int, long int, +), -4);
+ CHECK (FN3 (int, long int, -), -6);
+ CHECK (FN3 (int, long int, *), -5);
+ CHECK (FN3 (long int, int, +), -4);
+ CHECK (FN3 (long int, int, -), -6);
+ CHECK (FN3 (long int, int, *), -5);
+ CHECK (FN3 (unsigned int, int, +), -4);
+ CHECK (FN3 (unsigned int, int, -), -6);
+ CHECK (FN3 (unsigned int, int, *), -5);
+ CHECK (FN3 (int, unsigned int, +), -4);
+ CHECK (FN3 (int, unsigned int, -), -6);
+ CHECK (FN3 (int, unsigned int, *), -5);
+ CHECK (FN3 (unsigned long int, int, +), -4);
+ CHECK (FN3 (unsigned long int, int, -), -6);
+ CHECK (FN3 (unsigned long int, int, *), -5);
+ CHECK (FN3 (int, unsigned long int, +), -4);
+ CHECK (FN3 (int, unsigned long int, -), -6);
+ CHECK (FN3 (int, unsigned long int, *), -5);
+
+ CHECK (FN4 (char, char, +), 2);
+ CHECK (FN4 (char, char, -), 6);
+ CHECK (FN4 (char, char, *), -8);
+ CHECK (FN4 (unsigned char, unsigned char, +), 2);
+ CHECK (FN4 (unsigned char, unsigned char, -), 6);
+ CHECK (FN4 (unsigned char, unsigned char, *), -8);
+ CHECK (FN4 (short, short, +), 2);
+ CHECK (FN4 (short, short, -), 6);
+ CHECK (FN4 (short, short, *), -8);
+ CHECK (FN4 (unsigned short, unsigned short, +), 2);
+ CHECK (FN4 (unsigned short, unsigned short, -), 6);
+ CHECK (FN4 (unsigned short, unsigned short, *), -8);
+ CHECK (FN4 (int, int, +), 2);
+ CHECK (FN4 (int, int, -), 6);
+ CHECK (FN4 (int, int, *), -8);
+ CHECK (FN4 (unsigned int, unsigned int, +), 2);
+ CHECK (FN4 (unsigned int, unsigned int, -), 6);
+ CHECK (FN4 (unsigned int, unsigned int, *), -8);
+ CHECK (FN4 (long int, long int, +), 2);
+ CHECK (FN4 (long int, long int, -), 6);
+ CHECK (FN4 (long int, long int, *), -8);
+ CHECK (FN4 (unsigned long int, unsigned long int, +), 2);
+ CHECK (FN4 (unsigned long int, unsigned long int, -), 6);
+ CHECK (FN4 (unsigned long int, unsigned long int, *), -8);
+ CHECK (FN4 (long long int, long int, +), 2);
+ CHECK (FN4 (long long int, long int, -), 6);
+ CHECK (FN4 (long long int, long int, *), -8);
+ CHECK (FN4 (unsigned long long int, unsigned long long int, +), 2);
+ CHECK (FN4 (unsigned long long int, unsigned long long int, -), 6);
+ CHECK (FN4 (unsigned long long int, unsigned long long int, *), -8);
+ CHECK (FN4 (int, unsigned char, +), 2);
+ CHECK (FN4 (int, unsigned char, -), 6);
+ CHECK (FN4 (int, unsigned char, *), -8);
+ CHECK (FN4 (unsigned char, int, +), 2);
+ CHECK (FN4 (unsigned char, int, -), 6);
+ CHECK (FN4 (unsigned char, int, *), -8);
+ CHECK (FN4 (int, long int, +), 2);
+ CHECK (FN4 (int, long int, -), 6);
+ CHECK (FN4 (int, long int, *), -8);
+ CHECK (FN4 (long int, int, +), 2);
+ CHECK (FN4 (long int, int, -), 6);
+ CHECK (FN4 (long int, int, *), -8);
+ CHECK (FN4 (unsigned int, int, +), 2);
+ CHECK (FN4 (unsigned int, int, -), 6);
+ CHECK (FN4 (unsigned int, int, *), -8);
+ CHECK (FN4 (int, unsigned int, +), 2);
+ CHECK (FN4 (int, unsigned int, -), 6);
+ CHECK (FN4 (int, unsigned int, *), -8);
+ CHECK (FN4 (unsigned long int, int, +), 2);
+ CHECK (FN4 (unsigned long int, int, -), 6);
+ CHECK (FN4 (unsigned long int, int, *), -8);
+ CHECK (FN4 (int, unsigned long int, +), 2);
+ CHECK (FN4 (int, unsigned long int, -), 6);
+ CHECK (FN4 (int, unsigned long int, *), -8);
+
+ CHECK (FN5 (char), -77);
+ CHECK (FN5 (unsigned char), -77);
+ CHECK (FN5 (short), -77);
+ CHECK (FN5 (unsigned short), -77);
+ CHECK (FN5 (int), -77);
+ CHECK (FN5 (unsigned int), -77);
+ CHECK (FN5 (long int), -77);
+ CHECK (FN5 (unsigned long int), -77);
+ CHECK (FN5 (long long int), -77);
+ CHECK (FN5 (unsigned long long int), -77);
+
+ return 0;
+}
--- gcc/testsuite/c-c++-common/ubsan/overflow-2.c.mp 2013-12-14
13:57:24.592999374 +0100
+++ gcc/testsuite/c-c++-common/ubsan/overflow-2.c 2013-12-14
14:06:47.445072282 +0100
@@ -0,0 +1,8 @@
+/* { dg-do run } */
+/* { dg-options "-fsanitize=signed-integer-overflow" } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
+
+#define ASM1(a) asm volatile ("" : "+g" (a))
+#define ASM2(a, b) asm volatile ("" : "+g" (a), "+g" (b))
+
+#include "overflow-1.c"
Marek
