From 5feae4c1b96a9511aa06349e75543420a8696b59 Mon Sep 17 00:00:00 2001
From: "mergify[bot]" <37929162+mergify[bot]@users.noreply.github.com>
Date: Wed, 27 Apr 2022 14:16:29 -0400
Subject: [PATCH] fix: decrement types.Dec max length to keep decimal bits in
 DecimalPrecisionBits (backport #11772) (#11805)

---
 CHANGELOG.md       |  4 ++++
 types/coin_test.go | 26 +++++++++++++-------------
 2 files changed, 17 insertions(+), 13 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7416a172cebf..a661a3077401 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,6 +38,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Bug Fixes
+
+* [\#11772](https://github.com/cosmos/cosmos-sdk/pull/11772) Limit types.Dec length to avoid overflow.
+
 ## [v0.45.4](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.4) - 2022-04-25
 
 ### Bug Fixes
diff --git a/types/coin_test.go b/types/coin_test.go
index 3874f2d1bd7e..84e128b32ecc 100644
--- a/types/coin_test.go
+++ b/types/coin_test.go
@@ -1023,19 +1023,19 @@ func (s *coinTestSuite) TestParseCoins() {
 		{"0stake,1foo,99bar", true, sdk.Coins{{"bar", math.NewInt(99)}, {"foo", one}}}, // remove zero coins
 		{"1foo", true, sdk.Coins{{"foo", one}}},
 		{"10btc,1atom,20btc", false, nil},
-		{"10bar", true, sdk.Coins{{"bar", math.NewInt(10)}}},
-		{"99bar,1foo", true, sdk.Coins{{"bar", math.NewInt(99)}, {"foo", one}}},
-		{"98 bar , 1 foo  ", true, sdk.Coins{{"bar", math.NewInt(98)}, {"foo", one}}},
-		{"  55\t \t bling\n", true, sdk.Coins{{"bling", math.NewInt(55)}}},
-		{"2foo, 97 bar", true, sdk.Coins{{"bar", math.NewInt(97)}, {"foo", math.NewInt(2)}}},
-		{"5 mycoin,", false, nil},                            // no empty coins in a list
-		{"2 3foo, 97 bar", false, nil},                       // 3foo is invalid coin name
-		{"11me coin, 12you coin", false, nil},                // no spaces in coin names
-		{"1.2btc", true, sdk.Coins{{"btc", math.NewInt(1)}}}, // amount can be decimal, will get truncated
-		{"5foo:bar", true, sdk.Coins{{"foo:bar", math.NewInt(5)}}},
-		{"10atom10", true, sdk.Coins{{"atom10", math.NewInt(10)}}},
-		{"200transfer/channelToA/uatom", true, sdk.Coins{{"transfer/channelToA/uatom", math.NewInt(200)}}},
-		{"50ibc/7F1D3FCF4AE79E1554D670D1AD949A9BA4E4A3C76C63093E17E446A46061A7A2", true, sdk.Coins{{"ibc/7F1D3FCF4AE79E1554D670D1AD949A9BA4E4A3C76C63093E17E446A46061A7A2", math.NewInt(50)}}},
+		{"10bar", true, sdk.Coins{{"bar", sdk.NewInt(10)}}},
+		{"99bar,1foo", true, sdk.Coins{{"bar", sdk.NewInt(99)}, {"foo", one}}},
+		{"98 bar , 1 foo  ", true, sdk.Coins{{"bar", sdk.NewInt(98)}, {"foo", one}}},
+		{"  55\t \t bling\n", true, sdk.Coins{{"bling", sdk.NewInt(55)}}},
+		{"2foo, 97 bar", true, sdk.Coins{{"bar", sdk.NewInt(97)}, {"foo", sdk.NewInt(2)}}},
+		{"5 mycoin,", false, nil},                           // no empty coins in a list
+		{"2 3foo, 97 bar", false, nil},                      // 3foo is invalid coin name
+		{"11me coin, 12you coin", false, nil},               // no spaces in coin names
+		{"1.2btc", true, sdk.Coins{{"btc", sdk.NewInt(1)}}}, // amount can be decimal, will get truncated
+		{"5foo:bar", false, nil},                            // invalid separator
+		{"10atom10", true, sdk.Coins{{"atom10", sdk.NewInt(10)}}},
+		{"200transfer/channelToA/uatom", true, sdk.Coins{{"transfer/channelToA/uatom", sdk.NewInt(200)}}},
+		{"50ibc/7F1D3FCF4AE79E1554D670D1AD949A9BA4E4A3C76C63093E17E446A46061A7A2", true, sdk.Coins{{"ibc/7F1D3FCF4AE79E1554D670D1AD949A9BA4E4A3C76C63093E17E446A46061A7A2", sdk.NewInt(50)}}},
 		{"120000000000000000000000000000000000000000000000000000000000000000000000000000btc", false, nil},
 	}