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Fix C++ UB from negating INT_MIN with macro shift INT_MIN

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Rangi
2026-08-22 18:48:36 -04:00
parent 0888600cb7
commit e287ee2724
4 changed files with 11 additions and 1 deletions
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test/asm/shift-int-min.asm
+6
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MACRO m
println \1
shift $8000_0000 ; INT32_MIN
println \1
ENDM
m 1, 2, 3
test/asm/shift-int-min.err
+2
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warning: Cannot shift macro arguments past their beginning [-Wmacro-shift]
at shift-int-min.asm::m(3) <- shift-int-min.asm(6)
test/asm/shift-int-min.out
+2
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$1
$1