teak-llvm/clang/test/Analysis/diagnostics/find_last_store.c
George Karpenkov 2a6deeb928 [analyzer] Prevent crashes in FindLastStoreBRVisitor
This patch is a band-aid. A proper solution would be too change
trackNullOrUndefValue to only try to dereference the pointer when it is
relevant to the problem.

Differential Revision: https://reviews.llvm.org/D52435

llvm-svn: 342920
2018-09-24 21:20:30 +00:00

18 lines
742 B
C

// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -verify %s
typedef struct { float b; } c;
void *a();
void *d() {
return a(); // expected-note{{Returning pointer}}
}
void no_find_last_store() {
c *e = d(); // expected-note{{Calling 'd'}}
// expected-note@-1{{Returning from 'd'}}
// expected-note@-2{{'e' initialized here}}
(void)(e || e->b); // expected-note{{Assuming 'e' is null}}
// expected-note@-1{{Left side of '||' is false}}
// expected-note@-2{{Access to field 'b' results in a dereference of a null pointer (loaded from variable 'e')}}
// expected-warning@-3{{Access to field 'b' results in a dereference of a null pointer (loaded from variable 'e')}}
}