[DynamicLibrary] Fix build on musl libc
Summary:
On musl libc, stdin/out/err are defined as `FILE* const` globals,
and their address is not implicitly convertible to void *,
or at least gcc 6 doesn't allow it, giving errors like:
```
error: cannot initialize return object of type 'void *' with an rvalue of type 'FILE *const *' (aka '_IO_FILE *const *')
EXPLICIT_SYMBOL(stderr);
^~~~~~~~~~~~~~~~~~~~~~~
```
Add an explicit cast to fix that problem.
Reviewers: marsupial, krytarowski, dim
Reviewed By: dim
Differential Revision: https://reviews.llvm.org/D39297
llvm-svn: 316672
diff --git a/llvm/lib/Support/Unix/DynamicLibrary.inc b/llvm/lib/Support/Unix/DynamicLibrary.inc
index f05103c..029451f 100644
--- a/llvm/lib/Support/Unix/DynamicLibrary.inc
+++ b/llvm/lib/Support/Unix/DynamicLibrary.inc
@@ -71,7 +71,7 @@
// Must declare the symbols in the global namespace.
static void *DoSearch(const char* SymbolName) {
#define EXPLICIT_SYMBOL(SYM) \
- extern void *SYM; if (!strcmp(SymbolName, #SYM)) return &SYM
+ extern void *SYM; if (!strcmp(SymbolName, #SYM)) return (void*)&SYM
// If this is darwin, it has some funky issues, try to solve them here. Some
// important symbols are marked 'private external' which doesn't allow