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annotate gcc/testsuite/gcc.dg/strcmpopt_11.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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145
1830386684a0 gcc-9.2.0
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1 /* Verify that strcmp doesn't make assumptions about the size of a weak
1830386684a0 gcc-9.2.0
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2 symbol.
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3 { dg-do compile }
1830386684a0 gcc-9.2.0
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4 { dg-options "-O2 -Wall" } */
1830386684a0 gcc-9.2.0
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5
1830386684a0 gcc-9.2.0
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6 /* An ordinary definition of A with more elements might be provided
1830386684a0 gcc-9.2.0
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7 in another translation unit. Even though that would be undefined
1830386684a0 gcc-9.2.0
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8 (the type of the actual definition must be the same as the type
1830386684a0 gcc-9.2.0
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9 of the weak declaration) this test verifies that GCC doesn't rely
1830386684a0 gcc-9.2.0
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10 on the size of this A for optimization (as a matter of QoI). */
1830386684a0 gcc-9.2.0
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11 __attribute__ ((weak)) char a[3];
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12
1830386684a0 gcc-9.2.0
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13 int cmp_a3_x (void)
1830386684a0 gcc-9.2.0
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14 {
1830386684a0 gcc-9.2.0
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15 return __builtin_strcmp (a, "1234567") == 0;
1830386684a0 gcc-9.2.0
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16 }