libcpp/expr.c · 8e72847528aa99b09cfc9b4072dbcf17b6d700bf · lvzhengyang / riscv-gcc-1

re PR preprocessor/55715 (bogus overflow warning for #if A-B when A<0 & B==minimum integer) · 3a4efce7

	PR preprocessor/55715
libcpp:
	* expr.c (num_binary_op): Implement subtraction directly rather
	than with negation and falling through into addition case.

gcc/testsuite:
	* gcc.dg/cpp/expr-overflow-1.c: New test.

From-SVN: r205846

committed 11 years ago

3a4efce7

expr.c 55.9 KB