Bug 79 – Assertion failure: mtype.c 364 - using a forward-referenced alias of an undefined type

If I forward-reference a type that is an alias of an undefined symbol, DMD crashes out. ---------- enum : LCTYPE { LOCALE_ILANGUAGE, } alias DWORD LCTYPE; ---------- D:\My Documents\Programming\D\Tests\bugs\winnls.d(1): identifier 'DWORD' is not defined Assertion failure: 't' on line 364 in file 'mtype.c' ---------- after which DMD hangs. It appears to affect all uses of such an alias as a type, as long as the use precedes the alias declaration: - declaring a variable or constant, whether at module, function or class/struct level - declaring a typedef - declaring an alias of the derived pointer or array type - using as a function return type - using as a function parameter

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [email protected] schrieb am 2006-04-01: > If I forward-reference a type that is an alias of an undefined symbol, DMD > crashes out. > > ---------- > enum : LCTYPE { > LOCALE_ILANGUAGE, > } > > alias DWORD LCTYPE; > ---------- > D:\My Documents\Programming\D\Tests\bugs\winnls.d(1): identifier 'DWORD' is not > defined > Assertion failure: 't' on line 364 in file 'mtype.c' > ---------- > > after which DMD hangs. Doesn't hang on Linux, just asserts: compile/a/alias_33_B.d(13): identifier 'UNDEFINED' is not defined dmd: mtype.c:364: Type* Type::merge(): Assertion `t' failed. Program received signal SIGABRT, Aborted. 0x5566ab81 in kill () from /lib32/libc.so.6 (gdb) bt #0 0x5566ab81 in kill () from /lib32/libc.so.6 #1 0x5566a8f5 in raise () from /lib32/libc.so.6 #2 0x5566bd58 in abort () from /lib32/libc.so.6 #3 0x55663887 in __assert_fail () from /lib32/libc.so.6 #4 0x080c27a0 in Type::merge () #5 0x080c63ce in TypeQualified::resolveHelper () #6 0x080c6803 in TypeIdentifier::resolve () #7 0x080c69a8 in TypeIdentifier::semantic () #8 0x0808524f in VarDeclaration::semantic () #9 0x080c1688 in Module::semantic () #10 0x080bf1b7 in main () Added to DStress as http://dstress.kuehne.cn/nocompile/a/alias_33_A.d http://dstress.kuehne.cn/nocompile/a/alias_33_B.d http://dstress.kuehne.cn/nocompile/a/alias_33_C.d http://dstress.kuehne.cn/nocompile/a/alias_33_D.d http://dstress.kuehne.cn/nocompile/t/typedef_14_A.d http://dstress.kuehne.cn/nocompile/t/typedef_14_B.d http://dstress.kuehne.cn/nocompile/t/typedef_14_C.d http://dstress.kuehne.cn/nocompile/t/typedef_14_D.d Thomas -----BEGIN PGP SIGNATURE----- iD8DBQFEL7zQ3w+/yD4P9tIRAjUjAJwOyFf7QbBGbKCCenaye7MPQ/aGcACfcNWf FQLNSMx+BTm7Zu6bvZ+Dre8= =v2FJ -----END PGP SIGNATURE-----

Cannot duplicate with 0.157.

Fixed 0.158