forked from OSchip/llvm-project
123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -disable-free -analyzer-eagerly-assume -analyzer-checker=core -analyzer-checker=deadcode -verify %s
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unsigned long strlen(const char *);
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int size_rdar9373039 = 1;
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int rdar9373039() {
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int x;
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int j = 0;
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for (int i = 0 ; i < size_rdar9373039 ; ++i)
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x = 1;
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// strlen doesn't invalidate the value of 'size_rdar9373039'.
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int extra = (2 + strlen ("Clang") + ((4 - ((unsigned int) (2 + strlen ("Clang")) % 4)) % 4)) + (2 + strlen ("1.0") + ((4 - ((unsigned int) (2 + strlen ("1.0")) % 4)) % 4));
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for (int i = 0 ; i < size_rdar9373039 ; ++i)
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j += x; // no-warning
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return j;
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}
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int foo_rdar9373039(const char *);
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int rdar93730392() {
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int x;
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int j = 0;
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for (int i = 0 ; i < size_rdar9373039 ; ++i)
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x = 1;
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int extra = (2 + foo_rdar9373039 ("Clang") + ((4 - ((unsigned int) (2 + foo_rdar9373039 ("Clang")) % 4)) % 4)) + (2 + foo_rdar9373039 ("1.0") + ((4 - ((unsigned int) (2 + foo_rdar9373039 ("1.0")) % 4)) % 4)); // expected-warning {{never read}}
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for (int i = 0 ; i < size_rdar9373039 ; ++i)
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j += x; // expected-warning {{garbage}}
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return j;
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}
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int PR8962 (int *t) {
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// This should look through the __extension__ no-op.
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if (__extension__ (t)) return 0;
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return *t; // expected-warning {{null pointer}}
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}
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int PR8962_b (int *t) {
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// This should still ignore the nested casts
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// which aren't handled by a single IgnoreParens()
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if (((int)((int)t))) return 0;
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return *t; // expected-warning {{null pointer}}
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}
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int PR8962_c (int *t) {
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// If the last element in a StmtExpr was a ParenExpr, it's still live
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if (({ (t ? (_Bool)0 : (_Bool)1); })) return 0;
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return *t; // no-warning
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}
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int PR8962_d (int *t) {
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// If the last element in a StmtExpr is an __extension__, it's still live
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if (({ __extension__(t ? (_Bool)0 : (_Bool)1); })) return 0;
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return *t; // no-warning
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}
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int PR8962_e (int *t) {
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// Redundant casts can mess things up!
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// Environment used to skip through NoOp casts, but LiveVariables didn't!
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if (({ (t ? (int)(int)0L : (int)(int)1L); })) return 0;
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return *t; // no-warning
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}
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int PR8962_f (int *t) {
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// The StmtExpr isn't a block-level expression here,
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// the __extension__ is. But the value should be attached to the StmtExpr
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// anyway. Make sure the block-level check is /before/ IgnoreParens.
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if ( __extension__({
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_Bool r;
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if (t) r = 0;
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else r = 1;
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r;
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}) ) return 0;
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return *t; // no-warning
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}
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// This previously crashed logic in the analyzer engine when evaluating locations.
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void rdar10308201_aux(unsigned val);
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void rdar10308201 (int valA, void *valB, unsigned valC) {
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unsigned actual_base, lines;
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if (valC == 0) {
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actual_base = (unsigned)valB;
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for (;;) {
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if (valA & (1<<0))
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rdar10308201_aux(actual_base);
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}
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}
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}
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typedef struct Struct103 {
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unsigned i;
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} Struct103;
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typedef unsigned int size_t;
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void __my_memset_chk(char*, int, size_t);
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static int radar10367606(int t) {
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Struct103 overall;
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((__builtin_object_size ((char *) &overall, 0) != (size_t) -1) ? __builtin___memset_chk ((char *) &overall, 0, sizeof(Struct103), __builtin_object_size ((char *) &overall, 0)) : __my_memset_chk ((char *) &overall, 0, sizeof(Struct103)));
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return 0;
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}
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/* Caching out on a sink node. */
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extern int fooR10376675();
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extern int* bazR10376675();
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extern int nR10376675;
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void barR10376675(int *x) {
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int *pm;
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if (nR10376675 * 2) {
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int *pk = bazR10376675();
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pm = pk; //expected-warning {{never read}}
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}
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do {
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*x = fooR10376675();
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} while (0);
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}
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