Avoid strncpy warning.

jrfonseca · jrfonseca · commit d7d62c3f6cc4 · 2025-03-30T10:23:30.000+01:00
diff --git a/memtrail.cpp b/memtrail.cpp
@@ -196,7 +196,7 @@ _dladdr (const void *address, Dl_info *info) {
          if (progname[0] == 0) {
             size_t len = readlink("/proc/self/exe", progname, sizeof progname - 1);
             if (len <= 0) {
-               strncpy(progname, program_invocation_name, PATH_MAX);
+               strncpy(progname, program_invocation_name, PATH_MAX - 1);
                len = PATH_MAX - 1;
             }
             progname[len] = 0;

Original file line number	Diff line number	Diff line change
`@@ -196,7 +196,7 @@ _dladdr (const void address, Dl_info info) {`
`196`	`196`	`if (progname[0] == 0) {`
`197`	`197`	`size_t len = readlink("/proc/self/exe", progname, sizeof progname - 1);`
`198`	`198`	`if (len <= 0) {`
`199`		`- strncpy(progname, program_invocation_name, PATH_MAX);`
	`199`	`+ strncpy(progname, program_invocation_name, PATH_MAX - 1);`
`200`	`200`	`len = PATH_MAX - 1;`
`201`	`201`	`}`
`202`	`202`	`progname[len] = 0;`