[Issue 23126] wrong result of integer division in presence of assert within conditional operator expression

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23126

--- Comment #4 from kdevel <kdevel at vogtner.de> ---
(In reply to Siarhei Siamashka from comment #3)
> (In reply to kdevel from comment #2)
> > Works since dmd 2.101.1.
> 
> Does the DMD test suite have a test for it? To ensure that this problem does
> not re-appear again in the future.
Simple question, not easy to answer. For now more than two hours I am trying to
bisect dmd between v2.100.2 and v2.101.1 to no avail. I have stopped when git
asked me to compile a commit of 2016

[e8ab5ca21f3010bb40509ca7aaf575440886795b] Merge pull request #1639 from
WalterBright/rm-PostBlitType

$ make -f posix.mak 
../dmd/src/dmd -conf= -c -o- -Isrc -Iimport -Hfimport/core/sync/barrier.di
src/core/sync/barrier.d
make: ../dmd/src/dmd: Command not found
make: *** [import/core/sync/barrier.di] Error 127

which fails. I could not git bisect skip this often enough in a reasonable
amount of time.

dmd 2.105.3 could not compile the old compiler:

[...]
(DC) COMMON

The following operation failed:
Name: common
Sources: 
 -> /tmp/k/dmd/src/dmd/common/bitfields.d
 -> /tmp/k/dmd/src/dmd/common/file.d
 -> /tmp/k/dmd/src/dmd/common/int128.d
 -> /tmp/k/dmd/src/dmd/common/outbuffer.d
 -> /tmp/k/dmd/src/dmd/common/string.d

Targets: 
 -> /tmp/k/dmd/generated/linux/release/64/common.o

Command: [...]dmd2/linux/bin64/dmd -c
-of/tmp/k/dmd/generated/linux/release/64/common.o -version=MARS -w -de -fPIC
-m64 -J/tmp/k/dmd/generated/linux/release/64 -I/tmp/k/dmd/src -dip25 -g
-color=on src/dmd/common/bitfields.d src/dmd/common/file.d
src/dmd/common/int128.d src/dmd/common/outbuffer.d src/dmd/common/string.d

-----------------------------------------------------------
Deprecation: `-dip25` no longer has any effect

make[1]: *** [dmd] Error 1

Therefor I used dmd 2.098.1 as HOST_DMD

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