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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [Wconversion-integer-no-sign.c] - Rev 328
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/* Test for diagnostics for implicit conversions between integer types These tests come from gcc/testsuite/gcc.dg/overflow-warn-2.c */ /* { dg-do compile } */ /* { dg-options "-std=c99 -fsigned-char -Wconversion -Wno-sign-conversion" } */ #include <limits.h> void fsc (signed char sc); void fuc (unsigned char uc); unsigned fui (unsigned int ui); void fsi (signed int ui); void h (int x) { unsigned int ui = 3; int si = 3; unsigned char uc = 3; signed char sc = 3; uc = ui; /* { dg-warning "conversion" } */ uc = si; /* { dg-warning "conversion" } */ sc = ui; /* { dg-warning "conversion" } */ sc = si; /* { dg-warning "conversion" } */ fuc (ui); /* { dg-warning "conversion" } */ fuc (si); /* { dg-warning "conversion" } */ fsc (ui); /* { dg-warning "conversion" } */ fsc (si); /* { dg-warning "conversion" } */ fsi (si); fui (ui); fsi (uc); si = uc; fui (uc); ui = uc; fui ('A'); ui = 'A'; fsi ('A'); si = 'A'; fuc ('A'); uc = 'A'; uc = x ? 1U : -1; /* { dg-warning "conversion" } */ uc = x ? SCHAR_MIN : 1U; /* { dg-warning "conversion" } */ uc = x ? 1 : -1; /* Warned by -Wsign-conversion. */ uc = x ? SCHAR_MIN : 1; /* Warned by -Wsign-conversion. */ ui = x ? 1U : -1; /* Warned by -Wsign-conversion. */ ui = x ? INT_MIN : 1U; /* Warned by -Wsign-conversion. */ ui = ui ? SCHAR_MIN : 1U; /* Warned by -Wsign-conversion. */ ui = 1U * -1; /* Warned by -Wsign-conversion. */ ui = ui + INT_MIN; /* Warned by -Wsign-conversion. */ ui = x ? 1 : -1; /* Warned by -Wsign-conversion. */ ui = ui ? SCHAR_MIN : 1; /* Warned by -Wsign-conversion. */ fuc (-1); /* Warned by -Wsign-conversion. */ uc = -1; /* Warned by -Wsign-conversion. */ fui (-1); /* Warned by -Wsign-conversion. */ ui = -1; /* Warned by -Wsign-conversion. */ fuc ('\xa0'); /* Warned by -Wsign-conversion. */ uc = '\xa0'; /* Warned by -Wsign-conversion. */ fui ('\xa0'); /* Warned by -Wsign-conversion. */ ui = '\xa0'; /* Warned by -Wsign-conversion. */ fsi ((unsigned) INT_MAX + 1U); /* Warned by -Wsign-conversion. */ si = (unsigned) INT_MAX + 1U; /* Warned by -Wsign-conversion. */ fsi (UINT_MAX - 1); /* Warned by -Wsign-conversion. */ si = UINT_MAX - 1; /* Warned by -Wsign-conversion. */ fsi (UINT_MAX - 1U); /* Warned by -Wsign-conversion. */ si = UINT_MAX - 1U; /* Warned by -Wsign-conversion. */ fsi (UINT_MAX/3U); si = UINT_MAX/3U; fsi (UINT_MAX/3); si = UINT_MAX/3; fui (UINT_MAX - 1); ui = UINT_MAX - 1; uc = (unsigned char) -1; ui = -1 * (1 * -1); ui = (unsigned) -1; fsc (uc); /* Warned by -Wsign-conversion. */ sc = uc; /* Warned by -Wsign-conversion. */ fuc (sc); /* Warned by -Wsign-conversion. */ uc = sc; /* Warned by -Wsign-conversion. */ fsi (ui); /* Warned by -Wsign-conversion. */ si = ui; /* Warned by -Wsign-conversion. */ fui (si); /* Warned by -Wsign-conversion. */ ui = si; /* Warned by -Wsign-conversion. */ fui (sc); /* Warned by -Wsign-conversion. */ ui = sc; /* Warned by -Wsign-conversion. */ } unsigned fui (unsigned a) { return a + -1; } /* Warned by -Wsign-conversion. */
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