Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/warn/Wconversion3.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// PR c++/34198 // { dg-do compile } // { dg-options "-O2 -Wconversion -Wsign-conversion" } 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 change value" } unsigned char j = (unsigned int) (short int) us; // { dg-warning "may change value" } signed char k = (int) (unsigned short int) ss; // { dg-warning "may change 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" } }