[clang] [clang][analyzer] Support non-default address spaces in the cstring checker (PR #153498)

[Isaac Nudelman via cfe-commits]

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@@ -1,11 +1,26 @@
 // RUN: %clang_analyze_cc1 -triple amdgcn-unknown-unknown \
-// RUN:   -analyzer-checker=core -verify %s
+// RUN:   -analyzer-checker=core,unix -verify %s
 
 // expected-no-diagnostics
 //
 // By default, pointers are 64-bits.
+#define ADDRESS_SPACE_64BITS __attribute__((address_space(0)))
 #define ADDRESS_SPACE_32BITS __attribute__((address_space(3)))
 
 int test(ADDRESS_SPACE_32BITS int *p, ADDRESS_SPACE_32BITS void *q) {
   return p == q; // no-crash
 }
+
+// Make sure that the cstring checker handles non-default address spaces
+ADDRESS_SPACE_64BITS void *
+memcpy(ADDRESS_SPACE_64BITS void *,
+       ADDRESS_SPACE_32BITS const void *,
+       long unsigned int);
+
+typedef struct {
+  char m[1];
+} k;
+
+void l(ADDRESS_SPACE_32BITS char *p, ADDRESS_SPACE_64BITS k *n) {
+  memcpy(&n->m[0], p, 4);
+}
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nuudlman wrote:

Good idea, applied.

https://github.com/llvm/llvm-project/pull/153498