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testsuite: Update Wconversion testcase check type.

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Some compiler target like arm-linux\riscv\power\s390x\xtensa-gcc handle
char as unsigned char, then there are no warnings occur and got FAIL cases.
Just change the type char into explicit signed char to keep the feature
consistency.

gcc/testsuite/ChangeLog:

	* c-c++-common/Wconversion-1.c: Update type.
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jiawei 2022-05-05 18:33:20 +08:00 • committed by Palmer Dabbelt
parent d0d513b5ea
commit 8585185cc4
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gcc/testsuite/c-c++-common/Wconversion-1.c
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@ -10,5 +10,5 @@ void g()
signed char sc = 300; /* { dg-warning "conversion from .int. to .signed char. changes value from .300. to .44." } */
unsigned char uc = 300; /* { dg-warning "conversion from .int. to .unsigned char. changes value from .300. to .44." } */
unsigned char uc2 = 300u; /* { dg-warning "conversion from .unsigned int. to .unsigned char. changes value from .300. to .44." } */
char c2 = (double)1.0 + 200; /* { dg-warning "overflow in conversion from .double. to .char. changes value from .2.01e\\+2. to .127." } */
signed char c2 = (double)1.0 + 200; /* { dg-warning "overflow in conversion from .double. to .signed char. changes value from .2.01e\\+2. to .127." } */
}