https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101746
--- Comment #3 from Aldy Hernandez <aldyh at gcc dot gnu.org> --- (In reply to Christophe Lyon from comment #1) > In addition on arm: > > > FAIL: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++98 (test for excess > errors) > Excess errors: > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:148:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 2 bytes into a > region of size 0 overflows the destination [-Wstringop-overflow=] > > FAIL: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++14 (test for excess > errors) > Excess errors: > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:148:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 2 bytes into a > region of size 0 [-Wstringop-overflow=] > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:149:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 3 bytes into a > region of size 2 [-Wstringop-overflow=] > > FAIL: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++17 (test for excess > errors) > Excess errors: > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:148:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 2 bytes into a > region of size 0 [-Wstringop-overflow=] > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:149:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 3 bytes into a > region of size 2 [-Wstringop-overflow=] > > FAIL: g++.dg/warn/Wstringop-overflow-4.C -std=gnu++2a (test for excess > errors) > Excess errors: > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:148:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 2 bytes into a > region of size 0 [-Wstringop-overflow=] > /gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C:149:3: warning: 'void* > __builtin_memcpy(void*, const void*, unsigned int)' writing 3 bytes into a > region of size 2 [-Wstringop-overflow=] There is already PR101688 for this. Basically, I think all the issues reported here have corresponding PRs opened.
