forked from OSchip/llvm-project
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=core,core.experimental -verify -analyzer-constraints=range %s
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// These are used to trigger warnings.
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typedef typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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void free(void *);
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#define NULL ((void*)0)
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#define UINT_MAX (__INT_MAX__ *2U +1U)
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// Each of these adjusted ranges has an adjustment small enough to split the
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// solution range across an overflow boundary (Min for <, Max for >).
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// This corresponds to one set of branches in RangeConstraintManager.
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void smallAdjustmentGT (unsigned a) {
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char* b = NULL;
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if (a+2 > 1)
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b = malloc(1);
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if (a == UINT_MAX-1 || a == UINT_MAX)
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return; // no-warning
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else if (a < UINT_MAX-1)
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free(b);
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return; // no-warning
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}
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void smallAdjustmentGE (unsigned a) {
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char* b = NULL;
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if (a+2 >= 1)
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b = malloc(1);
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if (a == UINT_MAX-1)
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return; // no-warning
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else if (a < UINT_MAX-1 || a == UINT_MAX)
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free(b);
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return; // no-warning
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}
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void smallAdjustmentLT (unsigned a) {
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char* b = NULL;
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if (a+1 < 2)
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b = malloc(1);
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if (a == 0 || a == UINT_MAX)
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free(b);
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return; // no-warning
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}
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void smallAdjustmentLE (unsigned a) {
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char* b = NULL;
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if (a+1 <= 2)
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b = malloc(1);
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if (a == 0 || a == 1 || a == UINT_MAX)
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free(b);
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return; // no-warning
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}
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// Each of these adjusted ranges has an adjustment large enough to push the
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// comparison value over an overflow boundary (Min for <, Max for >).
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// This corresponds to one set of branches in RangeConstraintManager.
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void largeAdjustmentGT (unsigned a) {
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char* b = NULL;
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if (a-2 > UINT_MAX-1)
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b = malloc(1);
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if (a == 1 || a == 0)
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free(b);
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else if (a > 1)
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free(b);
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return; // no-warning
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}
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void largeAdjustmentGE (unsigned a) {
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char* b = NULL;
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if (a-2 >= UINT_MAX-1)
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b = malloc(1);
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if (a > 1)
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return; // no-warning
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else if (a == 1 || a == 0)
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free(b);
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return; // no-warning
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}
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void largeAdjustmentLT (unsigned a) {
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char* b = NULL;
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if (a+2 < 1)
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b = malloc(1);
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if (a == UINT_MAX-1 || a == UINT_MAX)
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free(b);
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else if (a < UINT_MAX-1)
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return; // no-warning
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return; // no-warning
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}
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void largeAdjustmentLE (unsigned a) {
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char* b = NULL;
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if (a+2 <= 1)
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b = malloc(1);
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if (a < UINT_MAX-1)
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return; // no-warning
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else if (a == UINT_MAX-1 || a == UINT_MAX)
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free(b);
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return; // no-warning
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}
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