From e986fe9a548ccf255ab2e8382fa87b251bb48b56 Mon Sep 17 00:00:00 2001
From: an7s <an7s@git.zephyr-software.com>
Date: Tue, 2 May 2017 13:58:39 +0000
Subject: [PATCH] Better error reporting
---
datashadow/datashadow_callbacks.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/datashadow/datashadow_callbacks.c b/datashadow/datashadow_callbacks.c
index d745c73..c0aeed9 100644
--- a/datashadow/datashadow_callbacks.c
+++ b/datashadow/datashadow_callbacks.c
@@ -66,8 +66,9 @@ void fptr_shadow_check_64(int p_shadowIndex, int p_policy, void **p_shadow)
switch (p_policy) {
case SHADOW_CONTINUE:
#ifdef DEBUG
- my_strcpy(msg, "Warning: overwrite of function pointer detected -- restoring saved value: 0x");
+ my_strcpy(msg, "Warning: overwrite of function pointer detected -- restoring saved value: shadow: 0x");
itox(*p_shadow, &msg[strlen(msg)]);
+
my_strcpy(&msg[strlen(msg)], " \n");
write(2, msg, strlen(msg));
#endif
@@ -76,7 +77,11 @@ void fptr_shadow_check_64(int p_shadowIndex, int p_policy, void **p_shadow)
default:
{
char msg[MAX_DIAGNOSTIC_SIZE];
- my_strcpy(msg, "Warning: overwrite of function pointer detected -- induce segfault\n");
+ my_strcpy(msg, "shadow value: 0x");
+ itox(*p_shadow, &msg[strlen(msg)]);
+ my_strcpy(&msg[strlen(msg)], " shadow idx: 0x");
+ itox(p_shadowIndex, &msg[strlen(msg)]);
+ my_strcpy(&msg[strlen(msg)], " : Warning: overwrite of function pointer or critical detected -- induce segfault\n");
write(2, msg, strlen(msg));
my_strcpy(0,""); // induce crash
}
--
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