diff options
Diffstat (limited to 'clang/test/Analysis')
-rw-r--r-- | clang/test/Analysis/diagnostics/track_subexpressions.cpp | 19 | ||||
-rw-r--r-- | clang/test/Analysis/uninit-const.cpp | 10 |
2 files changed, 25 insertions, 4 deletions
diff --git a/clang/test/Analysis/diagnostics/track_subexpressions.cpp b/clang/test/Analysis/diagnostics/track_subexpressions.cpp new file mode 100644 index 00000000000..e5a6b8ff115 --- /dev/null +++ b/clang/test/Analysis/diagnostics/track_subexpressions.cpp @@ -0,0 +1,19 @@ +// RUN: %clang_analyze_cc1 -x c++ -analyzer-checker=core -analyzer-output=text -verify %s + +typedef unsigned char uint8_t; + +#define UINT8_MAX 255 +#define TCP_MAXWIN 65535 + +uint8_t get_uint8_max() { + uint8_t rcvscale = UINT8_MAX; // expected-note{{'rcvscale' initialized to 255}} + return rcvscale; // expected-note{{Returning the value 255 (loaded from 'rcvscale')}} +} + +void shift_by_undefined_value() { + uint8_t shift_amount = get_uint8_max(); // expected-note{{'shift_amount' initialized to 255}} + // expected-note@-1{{Calling 'get_uint8_max'}} + // expected-note@-2{{Returning from 'get_uint8_max'}} + (void)(TCP_MAXWIN << shift_amount); // expected-warning{{The result of the left shift is undefined due to shifting by '255', which is greater or equal to the width of type 'int'}} + // expected-note@-1{{The result of the left shift is undefined due to shifting by '255', which is greater or equal to the width of type 'int'}} +} diff --git a/clang/test/Analysis/uninit-const.cpp b/clang/test/Analysis/uninit-const.cpp index f5166e6b27b..b6430307dc5 100644 --- a/clang/test/Analysis/uninit-const.cpp +++ b/clang/test/Analysis/uninit-const.cpp @@ -49,15 +49,17 @@ void f7(void) { int& f6_1_sub(int &p) { - return p; + return p; // expected-note{{Returning without writing to 'p'}} + // expected-note@-1{{Returning pointer (reference to 't')}} } void f6_1(void) { int t; // expected-note{{'t' declared without an initial value}} int p = f6_1_sub(t); //expected-warning {{Assigned value is garbage or undefined}} - //expected-note@-1 {{Calling 'f6_1_sub'}} - //expected-note@-2 {{Returning from 'f6_1_sub'}} - //expected-note@-3 {{Assigned value is garbage or undefined}} + //expected-note@-1 {{Passing value via 1st parameter 'p'}} + //expected-note@-2 {{Calling 'f6_1_sub'}} + //expected-note@-3 {{Returning from 'f6_1_sub'}} + //expected-note@-4 {{Assigned value is garbage or undefined}} int q = p; doStuff6(q); } |