fixes: https://github.com/iovisor/bpftrace/issues/84

src/lexer.l

@@ -111,7 +111,7 @@ pid|tid|cgroup|uid|gid|nsecs|cpu|comm|stack|ustack|arg[0-9]|retval|func|probe|cu
 
 struct|union            { BEGIN(STRUCT); buffer = std::string(yytext); open_brackets = 0; }
 <STRUCT>"{"             { BEGIN(STRUCT); buffer += std::string(yytext); open_brackets++; }
-<STRUCT>"}"             { buffer += std::string(yytext);
+<STRUCT>"}"|"};"        { buffer += std::string(yytext);
                           if (open_brackets == 1)
                           {
                             BEGIN(INITIAL); return Parser::make_STRUCT(buffer, loc);

tests/codegen.cpp

@@ -72,6 +72,7 @@
 #include "codegen/struct_save.cpp"
 #include "codegen/struct_save_nested.cpp"
 #include "codegen/struct_save_string.cpp"
+#include "codegen/struct_semicolon.cpp"
 #include "codegen/struct_short.cpp"
 #include "codegen/struct_string_array.cpp"
 #include "codegen/struct_string_ptr.cpp"

tests/codegen/struct_semicolon.cpp

+#include "common.h"
+
+namespace bpftrace {
+namespace test {
+namespace codegen {
+
+TEST(codegen, struct_semicolon)
+{
+  auto expected = R"EXPECTED(%printf_t = type { i64, i64 }
+
+; Function Attrs: nounwind
+declare i64 @llvm.bpf.pseudo(i64, i64) #0
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
+
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
+entry:
+  %printf_args = alloca %printf_t, align 8
+  %1 = bitcast %printf_t* %printf_args to i8*
+  call void @llvm.lifetime.start.p0i8(i64 -1, i8* nonnull %1)
+  %2 = getelementptr inbounds %printf_t, %printf_t* %printf_args, i64 0, i32 0
+  store i64 0, i64* %2, align 8
+  %pseudo = tail call i64 @llvm.bpf.pseudo(i64 1, i64 1)
+  %get_stackid = tail call i64 inttoptr (i64 27 to i64 (i8*, i8*, i64)*)(i8* %0, i64 %pseudo, i64 256)
+  %get_pid_tgid = tail call i64 inttoptr (i64 14 to i64 ()*)()
+  %3 = shl i64 %get_pid_tgid, 32
+  %4 = or i64 %3, %get_stackid
+  %5 = getelementptr inbounds %printf_t, %printf_t* %printf_args, i64 0, i32 1
+  store i64 %4, i64* %5, align 8
+  %pseudo1 = tail call i64 @llvm.bpf.pseudo(i64 1, i64 2)
+  %get_cpu_id = tail call i64 inttoptr (i64 8 to i64 ()*)()
+  %perf_event_output = call i64 inttoptr (i64 25 to i64 (i8*, i8*, i64, i8*, i64)*)(i8* %0, i64 %pseudo1, i64 %get_cpu_id, %printf_t* nonnull %printf_args, i64 16)
+  call void @llvm.lifetime.end.p0i8(i64 -1, i8* nonnull %1)
+  ret i64 0
+}
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
+
+attributes #0 = { nounwind }
+attributes #1 = { argmemonly nounwind }
+)EXPECTED";
+
+  test("struct Foo { int x, y; char *str; };"
+       "k:f"
+       "{"
+       "  printf(\"%s\\n\", ustack);"
+       "}",
+       expected);
+
+  test("struct Foo { int x, y; char *str; }"
+       "k:f"
+       "{"
+       "  printf(\"%s\\n\", ustack);"
+       "}",
+       expected);
+}
+
+} // namespace codegen
+} // namespace test
+} // namespace bpftrace