liangfu commented on a change in pull request #7190:
URL: https://github.com/apache/tvm/pull/7190#discussion_r551154025
##########
File path: src/runtime/crt/common/crt_runtime_api.c
##########
@@ -38,7 +38,10 @@
static char g_last_error[1024];
-void TVMAPISetLastError(const char* msg) { strncpy(g_last_error, msg,
sizeof(g_last_error)); }
+void TVMAPISetLastError(const char* msg) {
+ strncpy(g_last_error, msg, sizeof(g_last_error) - 1);
+ g_last_error[sizeof(g_last_error) - 1] = 0;
Review comment:
I think no null-character is implicitly appended at the end of
destination only if source is longer than num, otherwise, destination is padded
with zeros until a total of num characters have been written to it. See
[strncpy - C++ reference](http://www.cplusplus.com/reference/cstring/strncpy/).
The error reported in the compiler meant "bound 1024 equals destination
size". As a correction for this, I think it'll be better to copy msg directly
to g_last_error:
```c
strcpy(g_last_error, msg);
```
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