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https://git.code.sf.net/p/quake/quakeforge
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b82174558b
I always suspected the overflow conversions were UB, but with gcc doing different things on arm, I thought it was about time to abandon those particular tests. What I was not expecting was for the return value of strcmp to be "UB" (in that there's no guarantee of the exact value, just < = > 0). Fortunately, nothing actually relies on the value of the op other than the tests, so modify the test to make the behavior well defined.
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
#include "head.c"
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const char test_strings[] =
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"\0"
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"abc\0"
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"def\0"
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"abc\0";
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static pr_int_t string_globals_init[] = {
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0, 1, 5, 9, // string pointers
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0, 0, 0, 0,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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};
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static pr_int_t string_globals_expect[] = {
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0, 1, 5, 9, // string pointers
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0, 0, 8, 0,
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// "\0" "abc" "def" "abc"
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-1, 0, 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, -1, 0, -1, // eq
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0, -1, -1, -1, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, -1, 0, // lt
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0, 0, 0, 0, -1, 0, 0, 0, -1, -1, 0, -1, -1, 0, 0, 0, // gt
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0, -1, -1, -1, 1, 0, -1, 0, 1, 1, 0, 1, 1, 0, -1, 0, // cmp
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-1, 0, 0, 0, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, 0, -1, // ge
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-1, -1, -1, -1, 0, -1, -1, -1, 0, 0, -1, 0, 0, -1, -1, -1, // le
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-1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // not
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};
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static dstatement_t string_statements[] = {
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{ OP(0, 0, 0, OP_LEA_A), 24, 0, 6 }, // init k
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// for (i = 4; i-- > 0; ) {
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{ OP(0, 0, 0, OP_LEA_A), 4, 0, 4 },
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{ OP(0, 0, 0, OP_IFA), 2, 0, 4 },
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{ OP(0, 0, 0, OP_BREAK), 0, 0, 0 },
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{ OP(0, 0, 0, OP_LEA_C), 4, -1, 4 }, // dec i
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{ OP(0, 0, 0, OP_WITH), 4, 4, 1 }, // load i
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// for (j = 4; j-- > 0; ) {
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{ OP(0, 0, 0, OP_LEA_A), 4, 0, 5 }, // init j
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{ OP(0, 0, 0, OP_IFA), 2, 0, 5 },
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{ OP(0, 0, 0, OP_JUMP_A), -6, 0, 0 },
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{ OP(0, 0, 0, OP_LEA_C), 5, -1, 5 }, // dec j
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{ OP(0, 0, 0, OP_WITH), 4, 5, 2 }, // load j
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{ OP(0, 0, 0, OP_LEA_C), 6, -1, 6 }, // dec k
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{ OP(0, 0, 0, OP_WITH), 4, 6, 3 }, // load k
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// i j k
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{ OP(1, 2, 3, OP_EQ_S), 0, 0, 0 },
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{ OP(1, 2, 3, OP_LT_S), 0, 0, 16 },
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{ OP(1, 2, 3, OP_GT_S), 0, 0, 32 },
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{ OP(1, 2, 3, OP_CMP_S), 0, 0, 48 },
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{ OP(3, 0, 0, OP_LT_I_1), 48, 0, 7 }, // convert < 0, 0, > 0 to -1, 0, 1
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{ OP(3, 0, 3, OP_GT_I_1), 48, 0, 48 }, // ...
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{ OP(0, 3, 3, OP_SUB_I_1), 7, 48, 48 }, // ...
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{ OP(1, 2, 3, OP_GE_S), 0, 0, 64 },
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{ OP(1, 2, 3, OP_LE_S), 0, 0, 80 },
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{ OP(1, 2, 3, OP_NOT_S), 0, 0, 96 },
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// }
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{ OP(0, 0, 0, OP_JUMP_A), -16, 0, 0 },
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// }
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};
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test_t tests[] = {
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{
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.desc = "string",
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.extra_globals = 4 * 1,
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.num_globals = num_globals (string_globals_init, string_globals_expect),
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.num_statements = num_statements (string_statements),
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.statements = string_statements,
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.init_globals = string_globals_init,
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.expect_globals = string_globals_expect,
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.strings = test_strings,
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.string_size = sizeof (test_strings),
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},
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};
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#include "main.c"
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