c_gen: only generate 'static inline' if it really is an inline fn

Author: bvdberg

ast/function_decl.c2

@@ -205,6 +205,14 @@ public fn CompoundStmt* FunctionDecl.getBody(const FunctionDecl* d) {
     return d.body;
 }
 
+
+public fn bool FunctionDecl.isInline(const FunctionDecl* d) {
+    if (!d.getBody()) return false;
+    if (!d.hasAttrInline()) return false;
+    if (!d.parent.isPublic()) return false;
+    return true;
+}
+
 public fn bool FunctionDecl.isType(const FunctionDecl* d) {
     return d.parent.functionDeclBits.is_type;
 }

generator/c_generator.c2

@@ -840,7 +840,7 @@ fn void Generator.gen_func_proto(Generator* gen, FunctionDecl* fd, string_buffer
         // also:
         // - generate lib.h for library
         // - generate module.h in cgen
-        if (gen.cur_external && fd.getBody()) out.add("static inline ");
+        if (gen.cur_external && fd.isInline()) out.add("static inline ");
         if (!gen.cur_external && !d.isExported() && !(gen.fast_build && d.isPublic())) out.add("static ");
         gen.emitTypePre(out, fd.getRType());
         out.space();