valid code emitting W106 since commit 68003b0cdb

[sezero]

Since commit 68003b0, valid code like below emits W106 warning:

/* minimal reproducer */
#include <stdint.h>
typedef enum
{
    SDL_FALSE = 0,
    SDL_TRUE = 1
} SDL_bool;
typedef int64_t Sint64;
typedef uint64_t Uint64;

extern Sint64
SDLTest_RandomSint64BoundaryValue(Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain);

void foo (void) {
    SDLTest_RandomSint64BoundaryValue(INT64_MIN, 99, SDL_FALSE);
    SDLTest_RandomSint64BoundaryValue(INT64_MIN + 1, INT64_MAX, SDL_FALSE);
    SDLTest_RandomSint64BoundaryValue(INT64_MIN, INT64_MAX - 1, SDL_FALSE);
    SDLTest_RandomSint64BoundaryValue(INT64_MIN, INT64_MAX, SDL_FALSE);
}

wcc386 -bt=nt -d0 -q -bm -5s -fp5 -fpi87 -sg -oteanbmier -ei -wx -wcd=303 -fo=1.obj 1.c
1.c(14): Warning! W106: Parameter 1: Constant out of range - truncated
1.c(14): Note! N2003: source conversion type is '__int64'
1.c(14): Note! N2004: target conversion type is '__int64'
1.c(15): Warning! W106: Parameter 1: Constant out of range - truncated
1.c(15): Note! N2003: source conversion type is '__int64'
1.c(15): Note! N2004: target conversion type is '__int64'
1.c(15): Warning! W106: Parameter 2: Constant out of range - truncated
1.c(15): Note! N2003: source conversion type is '__int64'
1.c(15): Note! N2004: target conversion type is '__int64'
1.c(16): Warning! W106: Parameter 1: Constant out of range - truncated
1.c(16): Note! N2003: source conversion type is '__int64'
1.c(16): Note! N2004: target conversion type is '__int64'
1.c(16): Warning! W106: Parameter 2: Constant out of range - truncated
1.c(16): Note! N2003: source conversion type is '__int64'
1.c(16): Note! N2004: target conversion type is '__int64'
1.c(17): Warning! W106: Parameter 1: Constant out of range - truncated
1.c(17): Note! N2003: source conversion type is '__int64'
1.c(17): Note! N2004: target conversion type is '__int64'
1.c(17): Warning! W106: Parameter 2: Constant out of range - truncated
1.c(17): Note! N2003: source conversion type is '__int64'
1.c(17): Note! N2004: target conversion type is '__int64'

The minimal reproducer above is abstracted from SDL, and it causes build
errors in github CI runners in the SDL2 branch due to our use of -we .

[sezero]

Note that the asm output is actually the same (as seen by wdis -a) across the
different ow versions. Only the latest ow is emitting a warning, which is bogus
as far as I can see.

[jmalak]

Thanks for your bug report. I will review last change, probably some mistake.
I will add some test code for 64-bit constants, because existing reggression tests include only 32-bit cases.

As workaround you can use -wcd=106 C compiler option.

[jmalak]

Now it should be fixed.
Please recheck.

[sezero]

Now it should be fixed. Please recheck.

Thanks -- Will test as soon as a CI build is available.

[sezero]

As of Last-CI-build from 5e8ab30 the warnings do not appear. Thanks.

Closing the ticket.