From 1ac22e762e2a5f2c6d48afbe16393d204d9caf47 Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Wed, 2 Dec 2015 01:28:26 +0000 Subject: [PATCH] re PR go/65717 (64-bit runtime FAILs with 32-bit compiler) PR go/65717 compiler: Fix array reflection when len doesn't fit in unsigned long. This comes up when using a 32-bit host and a 64-bit target. Fixes https://gcc.gnu.org/PR65717. Reviewed-on: https://go-review.googlesource.com/17330 From-SVN: r231142 --- gcc/go/gofrontend/MERGE | 2 +- gcc/go/gofrontend/types.cc | 46 ++++++++++++++++++++++------------------------ 2 files changed, 23 insertions(+), 25 deletions(-) diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE index 80136ab..b4c90ef 100644 --- a/gcc/go/gofrontend/MERGE +++ b/gcc/go/gofrontend/MERGE @@ -1,4 +1,4 @@ -81eb6a3f425b2158c67ee32c0cc973a72ce9d6be +c375f3bf470f94220149b486c947bb3eb57cde7d The first line of this file holds the git revision number of the last merge done from the gofrontend repository. diff --git a/gcc/go/gofrontend/types.cc b/gcc/go/gofrontend/types.cc index 64b560b..802a17d 100644 --- a/gcc/go/gofrontend/types.cc +++ b/gcc/go/gofrontend/types.cc @@ -6398,22 +6398,21 @@ Array_type::do_reflection(Gogo* gogo, std::string* ret) const if (this->length_ != NULL) { Numeric_constant nc; - unsigned long val; - if (!this->length_->numeric_constant_value(&nc) - || nc.to_unsigned_long(&val) != Numeric_constant::NC_UL_VALID) + if (!this->length_->numeric_constant_value(&nc)) { - if (!this->issued_length_error_) - { - error_at(this->length_->location(), "invalid array length"); - this->issued_length_error_ = true; - } + go_assert(saw_errors()); + return; } - else + mpz_t val; + if (!nc.to_int(&val)) { - char buf[50]; - snprintf(buf, sizeof buf, "%lu", val); - ret->append(buf); + go_assert(saw_errors()); + return; } + char* s = mpz_get_str(NULL, 10, val); + ret->append(s); + free(s); + mpz_clear(val); } ret->push_back(']'); @@ -6544,22 +6543,21 @@ Array_type::do_mangled_name(Gogo* gogo, std::string* ret) const if (this->length_ != NULL) { Numeric_constant nc; - unsigned long val; - if (!this->length_->numeric_constant_value(&nc) - || nc.to_unsigned_long(&val) != Numeric_constant::NC_UL_VALID) + if (!this->length_->numeric_constant_value(&nc)) { - if (!this->issued_length_error_) - { - error_at(this->length_->location(), "invalid array length"); - this->issued_length_error_ = true; - } + go_assert(saw_errors()); + return; } - else + mpz_t val; + if (!nc.to_int(&val)) { - char buf[50]; - snprintf(buf, sizeof buf, "%lu", val); - ret->append(buf); + go_assert(saw_errors()); + return; } + char *s = mpz_get_str(NULL, 10, val); + ret->append(s); + free(s); + mpz_clear(val); } ret->push_back('e'); } -- 2.7.4