60 lines
1.1 KiB
Mathematica
60 lines
1.1 KiB
Mathematica
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// RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.core -analyzer-store=region -analyzer-constraints=range -verify -fblocks %s
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// <rdar://problem/6776949>
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// main's 'argc' argument is always > 0
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int main(int argc, char* argv[]) {
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int *p = 0;
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if (argc == 0)
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*p = 1;
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if (argc == 1)
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return 1;
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int x = 1;
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int i;
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for(i=1;i<argc;i++){
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p = &x;
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}
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return *p; // no-warning
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}
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// PR 5969: the comparison of argc < 3 || argc > 4 should constraint the switch
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// statement from having the 'default' branch taken. This previously reported a false
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// positive with the use of 'v'.
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int pr5969(int argc, char *argv[]) {
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int v;
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if ((argc < 3) || (argc > 4)) return 0;
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switch(argc) {
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case 3:
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v = 33;
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break;
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case 4:
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v = 44;
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break;
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}
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return v; // no-warning
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}
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int pr5969_positive(int argc, char *argv[]) {
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int v;
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if ((argc < 3) || (argc > 4)) return 0;
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switch(argc) {
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case 3:
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v = 33;
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break;
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}
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return v; // expected-warning{{Undefined or garbage value returned to caller}}
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}
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