dc16628c93
This doesn't appear to be the cause of the slowdown. I'll have to try a manual bisect to see if there's really anything there, or if it's just the bot itself taking on additional load. Meanwhile, this change helps with correctness. This changes an assertion and adds a test case, then re-applies r180638, which was reverted in r180714. <rdar://problem/13296133> and PR15863 llvm-svn: 180864
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=core -verify -std=c99 -Dbool=_Bool %s
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// RUN: %clang_cc1 -analyze -analyzer-checker=core -verify -x c++ %s
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typedef __INTPTR_TYPE__ intptr_t;
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char const *p;
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void f0() {
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char const str[] = "This will change";
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p = str;
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} // expected-warning{{Address of stack memory associated with local variable 'str' is still referred to by the global variable 'p' upon returning to the caller. This will be a dangling reference}}
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void f1() {
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char const str[] = "This will change";
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p = str;
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p = 0; // no-warning
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}
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void f2() {
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p = (const char *) __builtin_alloca(12);
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} // expected-warning{{Address of stack memory allocated by call to alloca() on line 19 is still referred to by the global variable 'p' upon returning to the caller. This will be a dangling reference}}
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// PR 7383 - previosly the stack address checker would crash on this example
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// because it would attempt to do a direct load from 'pr7383_list'.
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static int pr7383(__const char *__)
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{
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return 0;
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}
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extern __const char *__const pr7383_list[];
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// Test that we catch multiple returns via globals when analyzing a function.
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void test_multi_return() {
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static int *a, *b;
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int x;
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a = &x;
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b = &x;
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} // expected-warning{{Address of stack memory associated with local variable 'x' is still referred to by the global variable 'a' upon returning}} expected-warning{{Address of stack memory associated with local variable 'x' is still referred to by the global variable 'b' upon returning}}
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intptr_t returnAsNonLoc() {
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int x;
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return (intptr_t)&x; // expected-warning{{Address of stack memory associated with local variable 'x' returned to caller}}
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}
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bool returnAsBool() {
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int x;
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return &x; // no-warning
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}
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void assignAsNonLoc() {
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extern intptr_t ip;
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int x;
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ip = (intptr_t)&x;
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} // expected-warning{{Address of stack memory associated with local variable 'x' is still referred to by the global variable 'ip' upon returning}}
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void assignAsBool() {
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extern bool b;
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int x;
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b = &x;
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} // no-warning
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