[Issue 23564] New: [REG 2.101.0] SIGSEGV during compilation

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23564

          Issue ID: 23564
           Summary: [REG 2.101.0] SIGSEGV during compilation
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: petr.silhavy at yandex.com

linux 6.0.7, DMD64 D Compiler v2.101.1 and 2.101.0 

code to reproduce (no small sample) :
git clone https://git.code.sf.net/p/vs4/code vs4
cd vs4
meson setup --native-file dmd.ini Builddir
cd Builddir 
ninja


SIGSEGV while compiling mm/block.d

gdc (GCC) 12.2.0 and LDC - the LLVM D compiler (1.30.0) are affected too.

gdb session :

gdb /usr/bin/dmd
GNU gdb (GDB) 12.1
...
(gdb) r -I=libvs4.a.p -I=. -I=.. -I=grammar -I/usr/include/glib-2.0
-I/usr/lib64/glib-2.0/include -I/usr/include/dmd/phobos -I/m/sw/bug/vs4
-I/m/sw/bug/vs4/grammar -I/m/sw/bug/vs4/tree -I/m/sw/bug/vs4/mm
-I/m/sw/bug/vs4/tools -I/m/sw/bug/vs4/B -I/m/sw/bug/vs4/B/grammar -color=on -wi
-g -debug -Xcc=-fuse-ld=mold -color=off -gdwarf=3 -version=alpha -mcpu=native
-gs -gf -vcolumns -verror-style=gnu -fPIC
-makedeps=libvs4.a.p/mm_block.d.o.deps -of=libvs4.a.p/mm_block.d.o -c
../mm/block.d
...
Starting program: /usr/bin/dmd -I=libvs4.a.p -I=. -I=.. -I=grammar
-I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/dmd/phobos
-I/m/sw/bug/vs4 -I/m/sw/bug/vs4/grammar -I/m/sw/bug/vs4/tree -I/m/sw/bug/vs4/mm
-I/m/sw/bug/vs4/tools -I/m/sw/bug/vs4/B -I/m/sw/bug/vs4/B/grammar -color=on -wi
-g -debug -Xcc=-fuse-ld=mold -color=off -gdwarf=3 -version=alpha -mcpu=native
-gs -gf -vcolumns -verror-style=gnu -fPIC
-makedeps=libvs4.a.p/mm_block.d.o.deps -of=libvs4.a.p/mm_block.d.o -c
../mm/block.d
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000555555841262 in ExpressionSemanticVisitor::visit(NewExp*) ()
(gdb) bt
#0  0x0000555555841262 in ExpressionSemanticVisitor::visit(NewExp*) ()
#1  0x000055555585876f in ExpressionSemanticVisitor::visit(AssignExp*) ()
#2  0x000055555573691a in StatementSemanticVisitor::visit(ExpStatement*) ()
#3  0x0000555555736eac in StatementSemanticVisitor::visit(CompoundStatement*)
    ()
#4  0x00005555556c05a8 in Semantic3Visitor::visit(FuncDeclaration*) ()
#5  0x00005555556be28a in Semantic3Visitor::visit(AggregateDeclaration*) ()
#6  0x00005555556c438a in Semantic3Visitor::visit(Module*) ()
#7  0x00005555558f8de4 in dmd.mars.tryMain(ulong, const(char)**, ref
dmd.globals.Param) ()
#8  0x0000555555905c71 in D main ()

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