Don't suggest the developer use 'arc4random' instead of 'rand' when that function is not available. Fixes PR 6012.

llvm-svn: 93508

1 files changed, 33 insertions, 0 deletions

diff --git a/clang/test/Analysis/security-syntax-checks-no-emit.c b/clang/test/Analysis/security-syntax-checks-no-emit.c
new file mode 100644
index 00000000000..fbfeb1a4041
--- /dev/null
+++ b/clang/test/Analysis/security-syntax-checks-no-emit.c
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -triple i686-pc-linux-gnu -analyze -warn-security-syntactic %s -verify
+
+// This file complements 'security-syntax-checks.m', but tests that we omit
+// specific checks on platforms where they don't make sense.
+
+// Omit the 'rand' check since 'arc4random' is not available on Linux.
+int      rand(void);
+double   drand48(void);
+double   erand48(unsigned short[3]);
+long     jrand48(unsigned short[3]);
+void     lcong48(unsigned short[7]);
+long     lrand48(void);
+long     mrand48(void);
+long     nrand48(unsigned short[3]);
+long     random(void);
+int      rand_r(unsigned *);
+
+void test_rand()
+{
+  unsigned short a[7];
+  unsigned b;
+  
+  rand();	// no-warning
+  drand48();	// no-warning
+  erand48(a);	// no-warning
+  jrand48(a);	// no-warning
+  lcong48(a);	// no-warning
+  lrand48();	// no-warning
+  mrand48();	// no-warning
+  nrand48(a);	// no-warning
+  rand_r(&b);	// no-warning
+  random();	// no-warning
+}