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Merge pull request #1918 from acqn/PPFix

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[cc65] Fixed bitwise-shift in preprocessor
This commit is contained in:
Bob Andrews
2022-11-18 19:09:55 +01:00
committed by GitHub
parent 93b015660d dadca9e033
commit a0a9cfdcd3
2 changed files with 138 additions and 10 deletions
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120
test/val/ppshift.c Normal file
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@@ -0,0 +1,120 @@
/*
Test of bitwise-shift in preprocessor expressions.
Note: Keep in mind that integer constants are always 32-bit in PP for cc65.
*/
/* Signed lhs */
#if 1 << 16 != 0x00010000
#error 1 << 16 != 0x00010000
#endif
#if 0x00010000 << -16 != 1
#error 0x00010000 << -16 != 1
#endif
#if 0x10000 >> 16 != 1
#error 0x10000 >> 16 != 1
#endif
#if 1 >> -16 != 0x10000
#error 1 >> -16 != 0x10000
#endif
#if 1 << 32 != 0
#error 1 << 32 != 0
#endif
#if 1 << -32 != 0
#error 1 << -32 != 0
#endif
#if 1 >> 32 != 0
#error 1 >> 32 != 0
#endif
#if 1 >> -32 != 0
#error 1 >> -32 != 0
#endif
#if -1 << 32 != 0
#error -1 << 32 != 0
#endif
#if -1 << -32 != -1
#error -1 << -32 != -1
#endif
#if -1 >> 32 != -1
#error -1 >> 32 != -1
#endif
#if -1 >> -32 != 0
#error -1 >> -32 != 0
#endif
/* NOTE: 2147483648 is an UNSIGNED integer! */
#if -1 << 2147483648 != 0
#error -1 << 2147483648 != 0
#endif
/* NOTE: -2147483648 is also an UNSIGNED integer! */
#if -1 << -2147483648 != 0
#error -1 << -2147483648 != 0
#endif
#if -1 << (-2147483647 - 1) != -1
#error -1 << (-2147483647 - 1) != -1
#endif
/* NOTE: 2147483648 is an UNSIGNED integer! */
#if -1 >> 2147483648 != -1
#error -1 >> 2147483648 != -1
#endif
/* NOTE: -2147483648 is also an UNSIGNED integer! */
#if -1 >> -2147483648 != -1
#error -1 >> -2147483648 != 0
#endif
#if -1 >> (-2147483647 - 1) != 0
#error -1 >> (-2147483647 - 1) != 0
#endif
/* Unsigned lhs */
#if 1U << 16 != 0x00010000
#error 1U << 16 != 0x00010000
#endif
#if 0x80000000U << -16 != 0x8000
#error 0x80000000U << -16 != 0x8000
#endif
#if 0x80000000U >> 16 != 0x8000
#error 0x80000000U >> 16 != 0x8000
#endif
#if 1U >> -16 != 0x10000
#error 1U >> -16 != 0x10000
#endif
#if -1U << 32 != 0
#error -1U << 32 != 0
#endif
#if -1U << -32 != 0
#error -1U << -32 != 0
#endif
#if -1U >> 32 != 0
#error -1U >> 32 != 0
#endif
#if -1U >> -32 != 0
#error -1U >> -32 != 0
#endif
int main(void)
{
return 0;
}