plist-macros.cpp
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix -verify %s
// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix -analyzer-output=plist-multi-file %s -o %t.plist
// RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/plist-macros.cpp.plist -
typedef __typeof(sizeof(int)) size_t;
void *malloc(size_t);
#define mallocmemory int *x = (int*)malloc(12);
void noteOnMacro(int y) {
y++;
y--;
mallocmemory
y++;
y++;
delete x; // expected-warning {{Memory allocated by malloc() should be deallocated by free(), not 'delete'}}
}
void macroIsFirstInFunction(int y) {
mallocmemory
y++; // expected-warning {{Potential leak of memory pointed to by 'x'}}
}
#define checkmacro p==0
void macroInExpressionAux(bool b);
int macroInExpression(int *p, int y) {;
y++;
macroInExpressionAux(checkmacro);
return *p; // expected-warning {{Dereference of null pointer}}
}
#define noPathNoteMacro y+y
int macroInExpressionNoNote(int *p, int y) {;
y++;
if (5 + noPathNoteMacro)
if (p)
;
return *p; // expected-warning {{Dereference of null pointer}}
}
#define macroWithArg(mp) mp==0
int macroWithArgInExpression(int *p, int y) {;
y++;
if (macroWithArg(p))
;
return *p; // expected-warning {{Dereference of null pointer}}
}
#define multiNoteMacroWithError \
if (p) \
;\
*p = 5;
int useMultiNoteMacroWithError(int *p, int y) {;
y++;
multiNoteMacroWithError // expected-warning {{Dereference of null pointer}}
return *p;
}
#define multiNoteMacro \
if (p) \
;\
if (y) \
;
int useMultiNote(int *p, int y) {;
y++;
if (p) {}
multiNoteMacro
return *p; // expected-warning {{Dereference of null pointer}}
}
#define CALL_FN(a) null_deref(a)
void null_deref(int *a) {
if (a)
return;
*a = 1; // expected-warning {{Dereference of null pointer}}
}
void test1() {
CALL_FN(0);
}
void test2(int *p) {
CALL_FN(p);
}