Gate memrchr on Linux

Author: lucic71

rules/cstring/ir_unsafe.json

@@ -739,7 +739,8 @@
     "return_type": {
       "type": "*mut ::libc::c_void",
       "is_unsafe_pointer": true
-    }
+    },
+    "target_os": "linux"
   },
   "f25": {
     "body": [
@@ -789,7 +790,8 @@
     "return_type": {
       "type": "*const ::libc::c_void",
       "is_unsafe_pointer": true
-    }
+    },
+    "target_os": "linux"
   },
   "f26": {
     "body": [
@@ -839,7 +841,8 @@
     "return_type": {
       "type": "*mut ::libc::c_void",
       "is_unsafe_pointer": true
-    }
+    },
+    "target_os": "linux"
   },
   "f27": {
     "body": [

rules/cstring/src.c

@@ -35,6 +35,8 @@ char *f18(const char *a0, const char *a1) { return strstr(a0, a1); }
 
 char *f21(const char *a0, const char *a1) { return strpbrk(a0, a1); }
 
+#if defined(__linux__)
 void *f24(const void *a0, int a1, size_t a2) { return memrchr(a0, a1, a2); }
+#endif
 
 int f27(const char *a0, const char *a1) { return strcasecmp(a0, a1); }

rules/cstring/src.cpp

@@ -20,6 +20,8 @@ const char *f22(const char *a0, const char *a1) { return strpbrk(a0, a1); }
 
 char *f23(char *a0, const char *a1) { return strpbrk(a0, a1); }
 
+#if defined(__linux__)
 const void *f25(const void *a0, int a1, size_t a2) { return memrchr(a0, a1, a2); }
 
 void *f26(void *a0, int a1, size_t a2) { return memrchr(a0, a1, a2); }
+#endif

rules/cstring/tgt_unsafe.rs

@@ -112,14 +112,17 @@ unsafe fn f23(a0: *mut u8, a1: *const u8) -> *mut u8 {
     libc::strpbrk(a0 as *const i8, a1 as *const i8) as *mut u8
 }
 
+#[cfg(target_os = "linux")]
 unsafe fn f24(a0: *const u8, a1: i32, a2: usize) -> *mut ::libc::c_void {
     libc::memrchr(a0 as *const ::libc::c_void, a1, a2 as usize)
 }
 
+#[cfg(target_os = "linux")]
 unsafe fn f25(a0: *const u8, a1: i32, a2: usize) -> *const ::libc::c_void {
     libc::memrchr(a0 as *const ::libc::c_void, a1, a2 as usize) as *const ::libc::c_void
 }
 
+#[cfg(target_os = "linux")]
 unsafe fn f26(a0: *mut u8, a1: i32, a2: usize) -> *mut ::libc::c_void {
     libc::memrchr(a0 as *const ::libc::c_void, a1, a2 as usize)
 }