Changeset b83c5e4 in mainline for uspace/lib/c/generic/rtld/rtld.c

Timestamp:

2023-01-18T20:15:42Z (23 months ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

eb630cf

Parents:

3e7e226

Message:

Make sure we don't call memcpy() with NULL pointer

The standard requires the pointer is valid even when size is 0,
and this triggers diagnostics in some checkers.

File:

• uspace/lib/c/generic/rtld/rtld.c (modified) (1 diff)

uspace/lib/c/generic/rtld/rtld.c

@@ -187 +187 @@
                 assert(((uintptr_t) dtv[m->id]) % m->tls_align == 0);
 
-                memcpy(dtv[m->id], m->tdata, m->tdata_size);
+                if (m->tdata)
+                        memcpy(dtv[m->id], m->tdata, m->tdata_size);
+
                 memset(dtv[m->id] + m->tdata_size, 0, m->tbss_size);
         }