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author | Iain Buclaw <ibuclaw@gdcproject.org> | 2020-08-25 11:44:48 +0200 |
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committer | Iain Buclaw <ibuclaw@gdcproject.org> | 2020-08-26 10:03:55 +0200 |
commit | 0f5c98b6a1a7eed281e359f40bc2e4326f2a2f56 (patch) | |
tree | ca23bf0a387a66f74738551ff1d31cb323d7e8c9 /gcc/d/dmd | |
parent | 7421802276e737c2da297599121480833db92de9 (diff) | |
download | gcc-0f5c98b6a1a7eed281e359f40bc2e4326f2a2f56.zip gcc-0f5c98b6a1a7eed281e359f40bc2e4326f2a2f56.tar.gz gcc-0f5c98b6a1a7eed281e359f40bc2e4326f2a2f56.tar.bz2 |
d: Merge upstream dmd cb4a96fae
Fixes both a bug where compilation would hang, and an issue where recursive
template limits are hit too early.
Reviewed-on: https://github.com/dlang/dmd/pull/11621
gcc/d/ChangeLog:
* dmd/MERGE: Merge upstream dmd cb4a96fae
Diffstat (limited to 'gcc/d/dmd')
-rw-r--r-- | gcc/d/dmd/MERGE | 2 | ||||
-rw-r--r-- | gcc/d/dmd/dmacro.c | 7 | ||||
-rw-r--r-- | gcc/d/dmd/dtemplate.c | 19 | ||||
-rw-r--r-- | gcc/d/dmd/expressionsem.c | 2 | ||||
-rw-r--r-- | gcc/d/dmd/globals.h | 2 | ||||
-rw-r--r-- | gcc/d/dmd/mtype.c | 4 | ||||
-rw-r--r-- | gcc/d/dmd/optimize.c | 11 |
7 files changed, 32 insertions, 15 deletions
diff --git a/gcc/d/dmd/MERGE b/gcc/d/dmd/MERGE index 8445bfaf..2dc2ef3 100644 --- a/gcc/d/dmd/MERGE +++ b/gcc/d/dmd/MERGE @@ -1,4 +1,4 @@ -2cc25c2191928f865e1b711f30b6a4268d6a0d9a +cb4a96faecb6b521ac4749581bcfa39f61143db0 The first line of this file holds the git revision number of the last merge done from the dlang/dmd repository. diff --git a/gcc/d/dmd/dmacro.c b/gcc/d/dmd/dmacro.c index 0718761..cefd3b0 100644 --- a/gcc/d/dmd/dmacro.c +++ b/gcc/d/dmd/dmacro.c @@ -226,11 +226,10 @@ void Macro::expand(OutBuffer *buf, size_t start, size_t *pend, { // limit recursive expansion static int nest; - static const int nestLimit = 1000; - if (nest > nestLimit) + if (nest > global.recursionLimit) { - error(Loc(), "DDoc macro expansion limit exceeded; more than %d " - "expansions.", nestLimit); + error(Loc(), "DDoc macro expansion limit exceeded; more than %d expansions.", + global.recursionLimit); return; } nest++; diff --git a/gcc/d/dmd/dtemplate.c b/gcc/d/dmd/dtemplate.c index a35721c..a86daee 100644 --- a/gcc/d/dmd/dtemplate.c +++ b/gcc/d/dmd/dtemplate.c @@ -4337,6 +4337,13 @@ MATCH deduceType(RootObject *o, Scope *sc, Type *tparam, TemplateParameters *par void visit(ArrayLiteralExp *e) { + // https://issues.dlang.org/show_bug.cgi?id=20092 + if (e->elements && e->elements->length && + e->type->toBasetype()->nextOf()->ty == Tvoid) + { + result = deduceEmptyArrayElement(); + return; + } if ((!e->elements || !e->elements->length) && e->type->toBasetype()->nextOf()->ty == Tvoid && tparam->ty == Tarray) @@ -5932,10 +5939,10 @@ void TemplateInstance::tryExpandMembers(Scope *sc2) static int nest; // extracted to a function to allow windows SEH to work without destructors in the same function //printf("%d\n", nest); - if (++nest > 500) + if (++nest > global.recursionLimit) { global.gag = 0; // ensure error message gets printed - error("recursive expansion"); + error("recursive expansion exceeded allowed nesting limit"); fatal(); } @@ -5949,10 +5956,10 @@ void TemplateInstance::trySemantic3(Scope *sc2) // extracted to a function to allow windows SEH to work without destructors in the same function static int nest; //printf("%d\n", nest); - if (++nest > 300) + if (++nest > global.recursionLimit) { global.gag = 0; // ensure error message gets printed - error("recursive expansion"); + error("recursive expansion exceeded allowed nesting limit"); fatal(); } semantic3(sc2); @@ -6353,7 +6360,7 @@ Lerror: while (ti && !ti->deferred && ti->tinst) { ti = ti->tinst; - if (++nest > 500) + if (++nest > global.recursionLimit) { global.gag = 0; // ensure error message gets printed error("recursive expansion"); @@ -8440,7 +8447,7 @@ void TemplateMixin::semantic(Scope *sc) static int nest; //printf("%d\n", nest); - if (++nest > 500) + if (++nest > global.recursionLimit) { global.gag = 0; // ensure error message gets printed error("recursive expansion"); diff --git a/gcc/d/dmd/expressionsem.c b/gcc/d/dmd/expressionsem.c index 9f21dab..d251996 100644 --- a/gcc/d/dmd/expressionsem.c +++ b/gcc/d/dmd/expressionsem.c @@ -2896,7 +2896,7 @@ public: else { static int nest; - if (++nest > 500) + if (++nest > global.recursionLimit) { exp->error("recursive evaluation of %s", exp->toChars()); --nest; diff --git a/gcc/d/dmd/globals.h b/gcc/d/dmd/globals.h index 9e1a5b2..9d6e1ec 100644 --- a/gcc/d/dmd/globals.h +++ b/gcc/d/dmd/globals.h @@ -244,6 +244,8 @@ struct Global Array<class Identifier*>* versionids; // command line versions and predefined versions Array<class Identifier*>* debugids; // command line debug versions and predefined versions + enum { recursionLimit = 500 }; // number of recursive template expansions before abort + /* Start gagging. Return the current number of gagged errors */ unsigned startGagging(); diff --git a/gcc/d/dmd/mtype.c b/gcc/d/dmd/mtype.c index de39ecb..36471557 100644 --- a/gcc/d/dmd/mtype.c +++ b/gcc/d/dmd/mtype.c @@ -2189,7 +2189,7 @@ Expression *Type::noMember(Scope *sc, Expression *e, Identifier *ident, int flag static int nest; // https://issues.dlang.org/show_bug.cgi?id=17380 - if (++nest > 500) + if (++nest > global.recursionLimit) { ::error(e->loc, "cannot resolve identifier `%s`", ident->toChars()); --nest; @@ -5536,7 +5536,7 @@ Type *TypeFunction::semantic(Loc loc, Scope *sc) bool errors = false; - if (inuse > 500) + if (inuse > global.recursionLimit) { inuse = 0; ::error(loc, "recursive type"); diff --git a/gcc/d/dmd/optimize.c b/gcc/d/dmd/optimize.c index e907229..45d94df 100644 --- a/gcc/d/dmd/optimize.c +++ b/gcc/d/dmd/optimize.c @@ -19,6 +19,7 @@ #include "init.h" #include "enum.h" #include "ctfe.h" +#include "errors.h" Expression *semantic(Expression *e, Scope *sc); @@ -1214,10 +1215,18 @@ Expression *Expression_optimize(Expression *e, int result, bool keepLvalue) v.ret = e; // Optimize the expression until it can no longer be simplified. - while (ex != v.ret) + size_t b = 0; + while (1) { + if (b++ == global.recursionLimit) + { + e->error("infinite loop while optimizing expression"); + fatal(); + } ex = v.ret; ex->accept(&v); + if (ex == v.ret) + break; } return ex; } |