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09ffc9b473
This diagnostic seems to be production ready, it's just an oversight that it wasn't turned on by default. The test changes are a bit of a mixed bag. Some tests that seemed like they clearly didn't need to use this behavior have been modified not to use it. Others that I couldn't be sure about, I added the necessary expected-warnings to. It's possible the diagnostic message could be improved to make it clearer that this warning can be suppressed by using a value that won't lose precision when converted to the target type (but can still be a floating point literal, such as "bool b = 1.0;"). llvm-svn: 154068
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core,experimental.deadcode.UnreachableCode -analyzer-store=region -analyzer-constraints=basic -verify %s
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// RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core,experimental.deadcode.UnreachableCode -analyzer-store=region -analyzer-constraints=range -verify %s
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int string_literal_init() {
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char a[] = "abc";
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char b[2] = "abc"; // expected-warning{{too long}}
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char c[5] = "abc";
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if (a[1] != 'b')
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return 0; // expected-warning{{never executed}}
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if (b[1] != 'b')
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return 0; // expected-warning{{never executed}}
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if (c[1] != 'b')
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return 0; // expected-warning{{never executed}}
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if (a[3] != 0)
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return 0; // expected-warning{{never executed}}
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if (c[3] != 0)
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return 0; // expected-warning{{never executed}}
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if (c[4] != 0)
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return 0; // expected-warning{{never executed}}
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return 42;
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}
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void nested_compound_literals(int rad) {
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int vec[6][2] = {{0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169}, // expected-warning 6 {{implicit conversion turns literal floating-point number into integer}}
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{0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}}; // expected-warning 6 {{implicit conversion turns literal floating-point number into integer}}
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int a;
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for (a = 0; a < 6; ++a) {
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vec[a][0] *= rad; // no-warning
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vec[a][1] *= rad; // no-warning
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}
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}
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void nested_compound_literals_float(float rad) {
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float vec[6][2] = {{0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169},
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{0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}};
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int a;
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for (a = 0; a < 6; ++a) {
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vec[a][0] *= rad; // no-warning
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vec[a][1] *= rad; // no-warning
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}
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}
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