From d2318d9ccfe69e21d0517f0448a6469a18b69513 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Sat, 13 Aug 2022 22:23:11 +0800
Subject: [PATCH] closes #15316; add testcase (#20213)

---
 tests/misc/m15316.nim  | 1 +
 tests/misc/trunner.nim | 6 ++++++
 2 files changed, 7 insertions(+)
 create mode 100644 tests/misc/m15316.nim

diff --git a/tests/misc/m15316.nim b/tests/misc/m15316.nim
new file mode 100644
index 000000000..188d06946
--- /dev/null
+++ b/tests/misc/m15316.nim
@@ -0,0 +1 @@
+proc foo = (if)
diff --git a/tests/misc/trunner.nim b/tests/misc/trunner.nim
index 67615cee9..bc2e872ef 100644
--- a/tests/misc/trunner.nim
+++ b/tests/misc/trunner.nim
@@ -249,6 +249,12 @@ sub/mmain.idx""", context
     let cmd = fmt"{nim} r -b:cpp --hints:off --nimcache:{nimcache} --warningAsError:ProveInit {file}"
     check execCmdEx(cmd) == ("witness\n", 0)
 
+  block: # bug #15316
+    let file = testsDir / "misc/m15316.nim"
+    let cmd = fmt"{nim} check --hints:off --nimcache:{nimcache} {file}"
+    check execCmdEx(cmd) == ("m15316.nim(1, 15) Error: expression expected, but found \')\'\nm15316.nim(2, 1) Error: expected: \':\', but got: \'[EOF]\'\nm15316.nim(2, 1) Error: expression expected, but found \'[EOF]\'\nm15316.nim(2, 1) " &
+          "Error: expected: \')\', but got: \'[EOF]\'\nError: illformed AST: \n", 1)
+
   block: # config.nims, nim.cfg, hintConf, bug #16557
     let cmd = fmt"{nim} r --hint:all:off --hint:conf tests/newconfig/bar/mfoo.nim"
     let (outp, exitCode) = execCmdEx(cmd, options = {poStdErrToStdOut})