/* PR c++/34198 */ /* { dg-do compile } */ /* { dg-options "-O2 -Wconversion" } */ signed char sc; unsigned char uc; short int ss; unsigned short int us; int si; unsigned int ui; void test1 (void) { int a = uc & 0xff; int b = sc & 0x7f; int c = 0xff & uc; int d = 0x7f & sc; int e = uc & sc; unsigned char f = (int) uc; signed char g = (int) sc; unsigned char h = (unsigned int) (short int) uc; signed char i = (int) (unsigned short int) sc; /* { dg-warning "may alter its value" "" { target { int32plus } } } */ unsigned char j = (unsigned int) (short int) us; /* { dg-warning "may alter its value" } */ signed char k = (int) (unsigned short int) ss; /* { dg-warning "may alter its value" } */ } void test2 (void) { signed char a = (unsigned char) sc; /* { dg-warning "may change the sign" } */ unsigned char b = (signed char) uc; /* { dg-warning "may change the sign" } */ signed char c = (int) (unsigned char) sc; /* { dg-warning "may change the sign" } */ unsigned char d = (int) (signed char) uc; /* { dg-warning "may change the sign" } */ int e = (unsigned int) si; /* { dg-warning "may change the sign" } */ unsigned int f = (int) ui; /* { dg-warning "may change the sign" } */ }