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author | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
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committer | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
commit | 222e2a7620e6520ffaf4fc4e69d79c18da31542e (patch) | |
tree | 7bfbc05bfa3b41c8f9d2e56d53a0bc3e310df239 /clang/test/Analysis/inline.c | |
parent | 3d206f03985b50beacae843d880bccdc91a9f424 (diff) |
Add the clang library to the repo (with some of my changes, too).
Diffstat (limited to 'clang/test/Analysis/inline.c')
-rw-r--r-- | clang/test/Analysis/inline.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/clang/test/Analysis/inline.c b/clang/test/Analysis/inline.c new file mode 100644 index 0000000..0827d93 --- /dev/null +++ b/clang/test/Analysis/inline.c @@ -0,0 +1,92 @@ +// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-ipa=inlining -analyzer-store region -verify %s + +int test1_f1() { + int y = 1; + y++; + return y; +} + +void test1_f2() { + int x = 1; + x = test1_f1(); + if (x == 1) { + int *p = 0; + *p = 3; // no-warning + } + if (x == 2) { + int *p = 0; + *p = 3; // expected-warning{{Dereference of null pointer (loaded from variable 'p')}} + } +} + +// Test that inlining works when the declared function has less arguments +// than the actual number in the declaration. +void test2_f1() {} +int test2_f2(); + +void test2_f3() { + test2_f1(test2_f2()); // expected-warning{{too many arguments in call to 'test2_f1'}} +} + +// Test that inlining works with recursive functions. + +unsigned factorial(unsigned x) { + if (x <= 1) + return 1; + return x * factorial(x - 1); +} + +void test_factorial() { + if (factorial(3) == 6) { + int *p = 0; + *p = 0xDEADBEEF; // expected-warning {{null}} + } + else { + int *p = 0; + *p = 0xDEADBEEF; // no-warning + } +} + +void test_factorial_2() { + unsigned x = factorial(3); + if (x == factorial(3)) { + int *p = 0; + *p = 0xDEADBEEF; // expected-warning {{null}} + } + else { + int *p = 0; + *p = 0xDEADBEEF; // no-warning + } +} + +// Test that returning stack memory from a parent stack frame does +// not trigger a warning. +static char *return_buf(char *buf) { + return buf + 10; +} + +void test_return_stack_memory_ok() { + char stack_buf[100]; + char *pos = return_buf(stack_buf); + (void) pos; +} + +char *test_return_stack_memory_bad() { + char stack_buf[100]; + char *x = stack_buf; + return x; // expected-warning {{stack memory associated}} +} + +// Test that passing a struct value with an uninitialized field does +// not trigger a warning if we are inlining and the body is available. +struct rdar10977037 { int x, y; }; +int test_rdar10977037_aux(struct rdar10977037 v) { return v.y; } +int test_rdar10977037_aux_2(struct rdar10977037 v); +int test_rdar10977037() { + struct rdar10977037 v; + v.y = 1; + v. y += test_rdar10977037_aux(v); // no-warning + return test_rdar10977037_aux_2(v); // expected-warning {{Passed-by-value struct argument contains uninitialized data}} +} + + |