[Issue 7886] New: derivedMembers infinite recursion

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7886

           Summary: derivedMembers infinite recursion
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: code at klickverbot.at


--- Comment #0 from klickverbot <code at klickverbot.at> 2012-04-10 16:10:57 PDT ---
Another regression in DMD 2.059 Git (7c22b8a) compared to D 2.058:
---
struct A {
  static if (__traits(derivedMembers, A).length) {}
}
---

The reason is quite obvious from the backtrace, DMD recurses infinitely while
trying to get the list of members even if the static if doesn't add members:
---
#0  0x001e70ec in TraitsExp::semantic (this=0xbf800288, sc=0x352000) at
traits.c:77
#1  0x000be883 in UnaExp::semantic (this=0x426d00, sc=0x681b70) at
expression.c:5844
#2  0x000e1d54 in DotIdExp::semantic (this=0x426d00, sc=0x681b70, flag=0) at
expression.c:6450
#3  0x000c0520 in DotIdExp::semantic (this=0x426d00, sc=0x681b70) at
expression.c:6382
#4  0x0007e78d in StaticIfCondition::include (this=0x426d20, sc=0x681b70,
s=0x0) at cond.c:257
#5  0x000071d2 in ConditionalDeclaration::include (this=0x426d60, sc=0x681ac0,
sd=0x0) at attrib.c:1242
#6  0x0008b92a in ScopeDsymbol::foreach (sc=0x681ac0, members=0x426bc0,
dg=0x1e9630 <_ZZN9TraitsExp8semanticEP5ScopeEN12PushIdentsDg2dgEPvmP7Dsymbol>,
ctx=0x681b50, pn=0x0) at dsymbol.c:1148
.
.
.
---

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