elf_resolve_symbol(): If a weak undefined symbol could not be resolved,

return 0 as its address.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37412 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/elf.cpp

@@ -991,6 +991,12 @@ elf_resolve_symbol(struct elf_image_info *image, struct Elf32_Sym *symbol,
 			newSymbol = elf_find_symbol(sharedImage, symbolName, versionInfo,
 				false);
 			if (newSymbol == NULL) {
+				// Weak undefined symbols get a value of 0, if unresolved.
+				if (ELF32_ST_BIND(symbol->st_info) == STB_WEAK) {
+					*_symbolAddress = 0;
+					return B_OK;
+				}
+
 				dprintf("\"%s\": could not resolve symbol '%s'\n",
 					image->name, symbolName);
 				return B_MISSING_SYMBOL;