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From: Gaius Mulley <gaius@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-4282] PR modula2/111510 runtime ICE findChildAndParent has caused internal runtime error Date: Tue, 26 Sep 2023 17:09:24 +0000 (GMT) [thread overview] Message-ID: <20230926170924.70DE03858C27@sourceware.org> (raw) https://gcc.gnu.org/g:53daf67fd55e005e37cb3ab33ac0783a71761de9 commit r14-4282-g53daf67fd55e005e37cb3ab33ac0783a71761de9 Author: Gaius Mulley <gaiusmod2@gmail.com> Date: Tue Sep 26 18:08:37 2023 +0100 PR modula2/111510 runtime ICE findChildAndParent has caused internal runtime error This patch fixes the runtime bug above. The full runtime message is: findChildAndParent has caused internal runtime error, RTentity is either corrupt or the module storage has not been initialized yet. The bug is due to a non nul terminated string determining the module initialization order. This results in modules being uninitialized and the above crash. The bug manifests itself on 32 bit systems - but obviously is latent on all targets and the fix should be applied to both gcc-14 and gcc-13. gcc/m2/ChangeLog: PR modula2/111510 * gm2-compiler/M2GenGCC.mod (IsExportedGcc): Minor spacing changes. (BuildTrashTreeFromInterface): Minor spacing changes. * gm2-compiler/M2Options.mod (GetRuntimeModuleOverride): Call string to generate a nul terminated C style string. * gm2-compiler/M2Quads.mod (BuildStringAdrParam): New procedure. (BuildM2InitFunction): Replace inline parameter generation with calls to BuildStringAdrParam. Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com> Diff: --- gcc/m2/gm2-compiler/M2GenGCC.mod | 4 ++-- gcc/m2/gm2-compiler/M2Options.mod | 2 +- gcc/m2/gm2-compiler/M2Quads.mod | 36 ++++++++++++++++++++---------------- 3 files changed, 23 insertions(+), 19 deletions(-) diff --git a/gcc/m2/gm2-compiler/M2GenGCC.mod b/gcc/m2/gm2-compiler/M2GenGCC.mod index c023eda077b..e0b024d244a 100644 --- a/gcc/m2/gm2-compiler/M2GenGCC.mod +++ b/gcc/m2/gm2-compiler/M2GenGCC.mod @@ -391,7 +391,7 @@ BEGIN IF WholeProgram THEN scope := GetScope (sym) ; - WHILE scope#NulSym DO + WHILE scope # NulSym DO IF IsDefImp (scope) THEN RETURN IsExported (scope, sym) @@ -771,7 +771,7 @@ VAR tree: Tree ; BEGIN tree := Tree (NIL) ; - IF sym#NulSym + IF sym # NulSym THEN i := 1 ; REPEAT diff --git a/gcc/m2/gm2-compiler/M2Options.mod b/gcc/m2/gm2-compiler/M2Options.mod index 1a64cf0d457..9d72a10b73e 100644 --- a/gcc/m2/gm2-compiler/M2Options.mod +++ b/gcc/m2/gm2-compiler/M2Options.mod @@ -1326,7 +1326,7 @@ END SetRuntimeModuleOverride ; PROCEDURE GetRuntimeModuleOverride () : ADDRESS ; BEGIN - RETURN RuntimeModuleOverride + RETURN string (RuntimeModuleOverride) END GetRuntimeModuleOverride ; diff --git a/gcc/m2/gm2-compiler/M2Quads.mod b/gcc/m2/gm2-compiler/M2Quads.mod index 0cea54040f0..95ca15a0b9e 100644 --- a/gcc/m2/gm2-compiler/M2Quads.mod +++ b/gcc/m2/gm2-compiler/M2Quads.mod @@ -2580,6 +2580,23 @@ BEGIN END BuildM2MainFunction ; +(* + BuildStringAdrParam - push the address of a nul terminated string onto the quad stack. +*) + +PROCEDURE BuildStringAdrParam (tok: CARDINAL; name: Name); +VAR + str, m2strnul: CARDINAL ; +BEGIN + PushTF (Adr, Address) ; + str := MakeConstLitString (tok, name) ; + m2strnul := MakeConstStringM2nul (tok, str) ; + PushTtok (m2strnul, tok) ; + PushT (1) ; + BuildAdrFunction +END BuildAdrFunction ; + + (* BuildM2InitFunction - *) @@ -2620,22 +2637,9 @@ BEGIN (* ConstructModules (module_name, argc, argv, envp); *) PushTtok (constructModules, tok) ; - PushTF(Adr, Address) ; - PushTtok (MakeConstLitString (tok, GetSymName (moduleSym)), tok) ; - PushT(1) ; - BuildAdrFunction ; - - PushTF(Adr, Address) ; - PushTtok (MakeConstLitString (tok, GetLibName (moduleSym)), tok) ; - PushT(1) ; - BuildAdrFunction ; - - PushTF(Adr, Address) ; - PushTtok (MakeConstLitString (tok, - makekey (GetRuntimeModuleOverride ())), - tok) ; - PushT(1) ; - BuildAdrFunction ; + BuildStringAdrParam (tok, GetSymName (moduleSym)) ; + BuildStringAdrParam (tok, GetLibName (moduleSym)) ; + BuildStringAdrParam (tok, makekey (GetRuntimeModuleOverride ())) ; PushTtok (SafeRequestSym (tok, MakeKey ("argc")), tok) ; PushTtok (SafeRequestSym (tok, MakeKey ("argv")), tok) ;
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