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jeremybenn |
/* Test that -Wtype-limits is enabled by -Wextra. */
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/* { dg-do compile } */
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/* { dg-options "-Wextra" } */
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extern void assert (int);
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void a (unsigned char x)
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{
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if (x < 0) return;/* { dg-warning "comparison is always false due to limited range of data type" } */
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if (x >= 0) return;/* { dg-warning "comparison is always true due to limited range of data type" } */
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if (0 > x) return;/* { dg-warning "comparison is always false due to limited range of data type" } */
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if (0 <= x) return;/* { dg-warning "comparison is always true due to limited range of data type" } */
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if (x <= 255) /* { dg-warning "comparison is always true due to limited range of data type" } */
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return;
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if (255 >= x) /* { dg-warning "comparison is always true due to limited range of data type" } */
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return;
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if ((int)x <= 255) /* { dg-bogus "comparison is always true due to limited range of data type" "" { xfail *-*-* } 16 } */
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return;
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if (255 >= (unsigned char) 1)
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return;
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}
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void b (unsigned short x)
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{
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if (x < 0) return;/* { dg-warning "comparison is always false due to limited range of data type" } */
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if (x >= 0) return;/* { dg-warning "comparison is always true due to limited range of data type" } */
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if (0 > x) return;/* { dg-warning "comparison is always false due to limited range of data type" } */
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if (0 <= x) return;/* { dg-warning "comparison is always true due to limited range of data type" } */
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}
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void c (unsigned int x)
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{
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if (x < 0) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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if (x >= 0) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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if (0 > x) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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if (0 <= x) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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if (1U >= 0) return;
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if (1U < 0) return;
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if (0 <= 1U) return;
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if (0 > 1U) return;
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}
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void d (unsigned long x)
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{
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if (x < 0) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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if (x >= 0) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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if (0 > x) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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if (0 <= x) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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}
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void e (unsigned long long x)
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{
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if (x < 0) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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if (x >= 0) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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if (0 > x) return;/* { dg-warning "comparison of unsigned expression < 0 is always false" } */
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if (0 <= x) return;/* { dg-warning "comparison of unsigned expression >= 0 is always true" } */
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}
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int test (int x)
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{
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if ((long long)x <= 0x123456789ABCLL) /* { dg-bogus "comparison is always true due to limited range of data type" "" { xfail *-*-* } 61 } */
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return 1;
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else
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return 0;
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}
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template
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void f(Int x) {
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assert(0 <= x and x <= D); // { dg-warning "comparison is always true due to limited range of data type" }
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}
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int ff(void) {
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f(5);
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f(5);
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}
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template
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void g(void) {
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assert(0 <= D);
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}
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int gg(void) {
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g();
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}
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