d8f9da2404
In places where the equivalent was already being done, i.e.: free(a); a = NULL; And in placs where struct members are being freed so that if we have some erroneous reference to its struct, then accesses to freed members will result in segfaults, which we can detect faster than use after free to areas that may still have something seemingly valid. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-jatyoofo5boc1bsvoig6bb6i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "util/debug.h"
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#include "util/expr.h"
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#include "tests.h"
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#include <stdlib.h>
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#include <linux/zalloc.h>
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static int test(struct parse_ctx *ctx, const char *e, double val2)
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{
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double val;
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if (expr__parse(&val, ctx, &e))
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TEST_ASSERT_VAL("parse test failed", 0);
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TEST_ASSERT_VAL("unexpected value", val == val2);
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return 0;
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}
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int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused)
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{
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const char *p;
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const char **other;
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double val;
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int i, ret;
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struct parse_ctx ctx;
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int num_other;
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expr__ctx_init(&ctx);
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expr__add_id(&ctx, "FOO", 1);
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expr__add_id(&ctx, "BAR", 2);
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ret = test(&ctx, "1+1", 2);
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ret |= test(&ctx, "FOO+BAR", 3);
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ret |= test(&ctx, "(BAR/2)%2", 1);
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ret |= test(&ctx, "1 - -4", 5);
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ret |= test(&ctx, "(FOO-1)*2 + (BAR/2)%2 - -4", 5);
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ret |= test(&ctx, "1-1 | 1", 1);
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ret |= test(&ctx, "1-1 & 1", 0);
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ret |= test(&ctx, "min(1,2) + 1", 2);
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ret |= test(&ctx, "max(1,2) + 1", 3);
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ret |= test(&ctx, "1+1 if 3*4 else 0", 2);
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if (ret)
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return ret;
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p = "FOO/0";
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ret = expr__parse(&val, &ctx, &p);
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TEST_ASSERT_VAL("division by zero", ret == 1);
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p = "BAR/";
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ret = expr__parse(&val, &ctx, &p);
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TEST_ASSERT_VAL("missing operand", ret == 1);
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TEST_ASSERT_VAL("find other",
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expr__find_other("FOO + BAR + BAZ + BOZO", "FOO", &other, &num_other) == 0);
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TEST_ASSERT_VAL("find other", num_other == 3);
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TEST_ASSERT_VAL("find other", !strcmp(other[0], "BAR"));
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TEST_ASSERT_VAL("find other", !strcmp(other[1], "BAZ"));
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TEST_ASSERT_VAL("find other", !strcmp(other[2], "BOZO"));
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TEST_ASSERT_VAL("find other", other[3] == NULL);
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for (i = 0; i < num_other; i++)
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zfree(&other[i]);
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free((void *)other);
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return 0;
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}
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