From 4facafcf702ec54694451d5bdda4f1faff94718d Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Mon, 4 Apr 2022 13:03:39 -0500
Subject: fix memory leak in _lily_assert_msg

---
 lily-test.c        |  6 ++----
 tests/assertions.c | 14 ++++++++++++--
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/lily-test.c b/lily-test.c
index 7484894..17959ca 100644
--- a/lily-test.c
+++ b/lily-test.c
@@ -30,7 +30,8 @@ static void _lily_assert_msg(bool statement, const char *location,
    size_t length = vsnprintf(NULL, 0, format_string, args_len);
    va_end(args_len);
 
-   if (_lily_globals.error_msg_len < length+1) {
+   if (_lily_globals.error_msg_len < length+1 ||
+       _lily_globals.error_msg == NULL) {
       if (_lily_globals.error_msg != NULL)
 	 free(_lily_globals.error_msg);
 
@@ -46,12 +47,9 @@ static void _lily_assert_msg(bool statement, const char *location,
       else {
 	 _lily_globals.error_msg = msg;
 	 _lily_globals.error_msg_len = length+1;
-	 printf("reallocated global msg: %p ", msg);
       }
    }
 
-   printf("length: %lu ", length);
-
    vsnprintf(_lily_globals.error_msg, length+1, format_string, args);
 
    va_end(args);
diff --git a/tests/assertions.c b/tests/assertions.c
index 6471225..fa7e82d 100644
--- a/tests/assertions.c
+++ b/tests/assertions.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "lily-test.h"
@@ -8,7 +9,7 @@ const char *test_LILY_LOCATION()
 {
    // if you move this line, you MUST update the expected string!
    const char *location = LILY_LOCATION;
-   int diff = strcmp(location, "tests/assertions.c:10");
+   int diff = strcmp(location, "tests/assertions.c:11");
    if (diff != 0)
       return "LILY_LOCATION did not resolve correctly!";
 
@@ -39,10 +40,11 @@ const char *test_assert_msg()
    else {
       if (strcmp(_lily_globals.error_msg, "should fail!") != 0)
 	 return "false assertion produced incorrect error message!";
-      if (strcmp(_lily_globals.error_location, "tests/assertions.c:36"))
+      if (strcmp(_lily_globals.error_location, "tests/assertions.c:37"))
 	 return "false assertion produced incorrect error location!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -71,6 +73,7 @@ const char *test_assert_true()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -98,6 +101,7 @@ const char *test_assert_false()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -130,6 +134,7 @@ const char *test_assert_not_null()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -162,6 +167,7 @@ const char *test_assert_null()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -196,6 +202,7 @@ const char *test_assert_ptr_equal()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -230,6 +237,7 @@ const char *test_assert_ptr_not_equal()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -262,6 +270,7 @@ const char *test_assert_int_equal()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
 
@@ -293,5 +302,6 @@ const char *test_assert_int_not_equal()
 	 return "false assertion produced incorrect error message!";
    }
 
+   free(_lily_globals.error_msg);
    return 0;
 }
-- 
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