forked from OSchip/llvm-project
26 lines
825 B
C
26 lines
825 B
C
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// RUN: %clang_analyze_cc1 -triple x86_64-pc-linux-gnu -analyzer-checker=core -verify %s
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typedef unsigned long size_t;
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#define BIGINDEX 65536U
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size_t check_VLA_overflow_sizeof(unsigned int x) {
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if (x == BIGINDEX) {
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// We expect here that size_t is a 64 bit value.
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// Size of this array should be the first to overflow.
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size_t s = sizeof(char[x][x][x][x]); // expected-warning{{Declared variable-length array (VLA) has too large size [core.VLASize]}}
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return s;
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}
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return 0;
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}
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void check_VLA_overflow_typedef() {
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unsigned int x = BIGINDEX;
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typedef char VLA[x][x][x][x]; // expected-warning{{Declared variable-length array (VLA) has too large size [core.VLASize]}}
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}
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void check_VLA_no_overflow() {
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unsigned int x = BIGINDEX;
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typedef char VLA[x][x][x][x - 1];
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typedef char VLA1[0xffffffffu];
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}
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