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jeremybenn |
/* PR 35635 */
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/* { dg-do compile } */
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/* { dg-options "-Wconversion -Wsign-conversion" } */
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struct unsigned_bit {
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unsigned int x:1;
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} unsigned_bit;
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struct signed_bit {
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int x:1;
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} signed_bit;
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int bar;
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int bar2;
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void func1()
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{
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/* The result of boolean operators fits in unsiged int:1, thus do
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not warn. */
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unsigned_bit.x = (bar != 0); /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar == 0); /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar <= 0); /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar >= 0); /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar < 0); /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar > 0); /* { dg-bogus "conversion" } */
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unsigned_bit.x = !bar; /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar || bar2); /* { dg-bogus "conversion" } */
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unsigned_bit.x = (bar && bar2); /* { dg-bogus "conversion" } */
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/* Both branches of ? fit in the destination, thus do not warn. */
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unsigned_bit.x = bar != 0 ? 1 : 0; /* { dg-bogus "conversion" } */
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unsigned_bit.x = bar != 0 ? 1.0 : 0.0; /* { dg-bogus "conversion" } */
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/* At least one branch of ? does not fit in the destination, thus
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warn. */
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unsigned_bit.x = bar != 0 ? 2 : 0; /* { dg-warning "conversion" } */
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unsigned_bit.x = bar != 0 ? 0 : -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */
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}
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void func2()
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{
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signed char schar_x;
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/* Both branches of ? fit in the destination, thus do not warn. */
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schar_x = bar != 0 ? 1 : 0; /* { dg-bogus "conversion" } */
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schar_x = bar != 0 ? 2.0 : 10; /* { dg-bogus "conversion" } */
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/* At least one branch of ? does not fit in the destination, thus
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warn. */
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schar_x = bar != 0 ? 2.1 : 10; /* { dg-warning "conversion" } */
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schar_x = bar != 0 ? (signed char) 1024: -1024; /* { dg-warning "conversion" } */
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}
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void func3()
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{
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unsigned char uchar_x;
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/* Both branches of ? fit in the destination, thus do not warn. */
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uchar_x = bar != 0 ? 1 : 0;
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uchar_x = bar != 0 ? 2.0 : 10;
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/* At least one branch of ? does not fit in the destination, thus
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warn. */
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uchar_x = bar != 0 ? 2.1 : 10; /* { dg-warning "conversion" } */
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uchar_x = bar != 0
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? (unsigned char) 1024
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: -1; /* { dg-warning "negative integer implicitly converted to unsigned type" } */
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}
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void func4()
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{
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signed_bit.x = -1; /* { dg-bogus "conversion" } */
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signed_bit.x = bar != 0 ? -1.0 : 0.0; /* { dg-bogus "conversion" } */
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signed_bit.x = bar != 0 ? -1 : 0; /* { dg-bogus "conversion" } */
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signed_bit.x = 1; /* { dg-warning "conversion" } */
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signed_bit.x = (bar != 0); /* { dg-warning "conversion" } */
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signed_bit.x = (bar == 0); /* { dg-warning "conversion" } */
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signed_bit.x = (bar <= 0); /* { dg-warning "conversion" } */
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signed_bit.x = (bar >= 0); /* { dg-warning "conversion" } */
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signed_bit.x = (bar < 0); /* { dg-warning "conversion" } */
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signed_bit.x = (bar > 0); /* { dg-warning "conversion" } */
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signed_bit.x = !bar; /* { dg-warning "conversion" } */
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signed_bit.x = (bar || bar2); /* { dg-warning "conversion" } */
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signed_bit.x = (bar && bar2); /* { dg-warning "conversion" } */
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signed_bit.x = bar != 0 ? 1 : 0; /* { dg-warning "conversion" } */
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signed_bit.x = bar != 0 ? 2 : 0; /* { dg-warning "conversion" } */
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}
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