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55705955ce
This is an attempt to avoid new false positives caused by the reverted r292800, however the scope of the fix is significantly reduced - some variables are still in incorrect memory spaces. Relevant test cases added. rdar://problem/30105546 rdar://problem/30156693 Differential revision: https://reviews.llvm.org/D28946 llvm-svn: 293043
36 lines
913 B
Objective-C
36 lines
913 B
Objective-C
// RUN: %clang_cc1 -w -fblocks -analyze -analyzer-checker=core,deadcode,alpha.core,debug.ExprInspection -verify %s
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void *malloc(unsigned long);
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void clang_analyzer_warnIfReached();
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void test_static_from_block() {
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static int *x;
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^{
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*x; // no-warning
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};
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}
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void test_static_within_block() {
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^{
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static int *x;
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*x; // expected-warning{{Dereference of null pointer}}
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};
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}
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void test_static_control_flow(int y) {
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static int *x;
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if (x) {
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// FIXME: Should be reachable.
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clang_analyzer_warnIfReached(); // no-warning
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}
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if (y) {
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// We are not sure if this branch is possible, because the developer
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// may argue that function is always called with y == 1 for the first time.
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// In this case, we can only advise the developer to add assertions
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// for suppressing such path.
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*x; // expected-warning{{Dereference of null pointer}}
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} else {
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x = malloc(1);
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}
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}
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