diff options
Diffstat (limited to 'test/Analysis/dead-stores.c')
| -rw-r--r-- | test/Analysis/dead-stores.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/test/Analysis/dead-stores.c b/test/Analysis/dead-stores.c index 5ddb452..b8d195d 100644 --- a/test/Analysis/dead-stores.c +++ b/test/Analysis/dead-stores.c @@ -1,6 +1,6 @@ -// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-checker=core,deadcode.DeadStores,deadcode.IdempotentOperations -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s -// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-checker=core,deadcode.DeadStores,deadcode.IdempotentOperations -analyzer-store=region -analyzer-constraints=basic -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s -// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-checker=core,deadcode.DeadStores,deadcode.IdempotentOperations -analyzer-store=region -analyzer-constraints=range -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s +// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-checker=core,deadcode.DeadStores,experimental.deadcode.IdempotentOperations -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s +// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-checker=core,deadcode.DeadStores,experimental.deadcode.IdempotentOperations -analyzer-store=region -analyzer-constraints=basic -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s +// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-checker=core,deadcode.DeadStores,experimental.deadcode.IdempotentOperations -analyzer-store=region -analyzer-constraints=range -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s void f1() { int k, y; // expected-warning{{unused variable 'k'}} expected-warning{{unused variable 'y'}} @@ -11,7 +11,7 @@ void f1() { void f2(void *b) { char *c = (char*)b; // no-warning char *d = b+1; // expected-warning {{never read}} expected-warning{{unused variable 'd'}} - printf("%s", c); // expected-warning{{implicitly declaring C library function 'printf' with type 'int (const char *, ...)'}} \ + printf("%s", c); // expected-warning{{implicitly declaring library function 'printf' with type 'int (const char *, ...)'}} \ // expected-note{{please include the header <stdio.h> or explicitly provide a declaration for 'printf'}} } @@ -526,3 +526,25 @@ void rdar8405222() { rdar8405222_aux(i); } +// Look through chains of assignements, e.g.: int x = y = 0, when employing +// silencing heuristics. +int radar11185138_foo() { + int x, y; + x = y = 0; // expected-warning {{never read}} + return y; +} + +int rdar11185138_bar() { + int y; + int x = y = 0; // no-warning + x = 2; + y = 2; + return x + y; +} + +int *radar11185138_baz() { + int *x, *y; + x = y = 0; // no-warning + return y; +} + |
