Possible memory leaks

[brennanMKE]

Description

The log at the bottom was collected with the Leaks profiler in Instruments. There appears to be memory accumulating while an app is working.

Context

Environment

• AWS Swift SDK version used:
• Operating System and version (iOS/macOS/Linux):
• Xcode version (if applicable):
• Swift compiler version (if applicable):
• Swift Tools version (if applicable):

Xcode, macOS running on macOS (latest release versions)

Reproduction Steps

Run an app which uses the code listed in the log.

Observed Behavior

Memory appears to accumulate.

Expected Behavior

Memory should level out after work is done.

Possible Solution

There may be memory allocations which are acquired but not always released in the Swift CRT integration.

leaks.log

``` s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 specialized CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/auth/credentials/CRTCredentials.swift:24 CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/:0 $s19AwsCommonRuntimeKit14CRTCredentialsC9accessKey6secret12sessionToken17expirationTimeout9allocatorACSS_S2SSgs6UInt64VAA9Allocator_ptcfC /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 $s16AWSClientRuntime14AWSCredentialsV9toCRTType09AwsCommonB3Kit14CRTCredentialsCyF /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/AWSClientRuntime/Sources/Auth/AWSCredentials.swift:26 $s16AWSClientRuntime29CredentialsProviderCRTAdapterV03getC009AwsCommonB3Kit14CRTCredentialsCyYaKF /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/AWSClientRuntime/Sources/Auth/CredentialsProviderCRTAdapter.swift:25 (1) await resume partial function for protocol witness for CRTCredentialsProvider.getCredentials() in conformance CredentialsProviderCRTAdapter /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 specialized CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/auth/credentials/CRTCredentials.swift:24 CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/:0 $s19AwsCommonRuntimeKit14CRTCredentialsC9accessKey6secret12sessionToken17expirationTimeout9allocatorACSS_S2SSgs6UInt64VAA9Allocator_ptcfC /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 $s16AWSClientRuntime14AWSCredentialsV9toCRTType09AwsCommonB3Kit14CRTCredentialsCyF /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/AWSClientRuntime/Sources/Auth/AWSCredentials.swift:26 AWSSigningConfig.toCRTType() /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 (1) await resume partial function for SigV4Middleware.handle(context:input:next:) /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 $s19AwsCommonRuntimeKit11HttpHeadersC3add4name5valueSbSS_SStF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeaders.swift:30 HttpHeaders.addArray(headers:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeaders.swift:40 $s13ClientRuntime21SdkHttpRequestBuilderC022convertSignedHeadersToI003crtE0AA0I0V09AwsCommonB3Kit0dE0C_tF /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/SdkHttpRequest.swift:73 (2) await resume partial function for SigV4Middleware.handle(context:input:next:) /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 SigningConfig.init(credentials:credentialsProvider:date:service:region:expiration:signedBodyHeader:signedBodyValue:flags:shouldSignHeader:signatureType:signingAlgorithm:configType:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/auth/signing/SigningConfig.swift:52 AWSSigningConfig.toCRTType() /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 (1) await resume partial function for SigV4Middleware.handle(context:input:next:) /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 specialized CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/auth/credentials/CRTCredentials.swift:24 CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/:0 $s19AwsCommonRuntimeKit14CRTCredentialsC9accessKey6secret12sessionToken17expirationTimeout9allocatorACSS_S2SSgs6UInt64VAA9Allocator_ptcfC /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 $s16AWSClientRuntime14AWSCredentialsV9toCRTType09AwsCommonB3Kit14CRTCredentialsCyF /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/AWSClientRuntime/Sources/Auth/AWSCredentials.swift:26 $s16AWSClientRuntime29CredentialsProviderCRTAdapterV03getC009AwsCommonB3Kit14CRTCredentialsCyYaKF /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/AWSClientRuntime/Sources/Auth/CredentialsProviderCRTAdapter.swift:25 (1) await resume partial function for protocol witness for CRTCredentialsProvider.getCredentials() in conformance CredentialsProviderCRTAdapter /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 $s19AwsCommonRuntimeKit10HttpHeaderV4name5value11compressionACSS_SSAA0eF11CompressionOtcfC /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeader.swift:23 specialized closure #2 in HttpClientConnection.makeRequest(requestOptions:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpClientConnection.swift:68 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 $s19AwsCommonRuntimeKit10HttpHeaderV4name5value11compressionACSS_SSAA0eF11CompressionOtcfC /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeader.swift:23 HttpHeaders.getAll() /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeaders.swift:85 specialized Headers.init(httpHeaders:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/Headers.swift:205 $s13ClientRuntime7HeadersV04httpC0AC09AwsCommonB3Kit04HttpC0C_tcfC /ROOT/PROJECT/Local/smithy-swift/:0 $s13ClientRuntime21SdkHttpRequestBuilderC022convertSignedHeadersToI003crtE0AA0I0V09AwsCommonB3Kit0dE0C_tF /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/SdkHttpRequest.swift:75 SdkHttpRequestBuilder.update(from:originalRequest:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/SdkHttpRequest.swift:61 (2) await resume partial function for SigV4Middleware.handle(context:input:next:) /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 $s19AwsCommonRuntimeKit10HttpHeaderV4name5value11compressionACSS_SSAA0eF11CompressionOtcfC /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeader.swift:23 HttpMessage.addHeaders(headers:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpMessage.swift:48 specialized SdkHttpRequest.toHttpRequest(bufferSize:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/SdkHttpRequest.swift:34 $s13ClientRuntime14SdkHttpRequestC02todE010bufferSize09AwsCommonB3Kit0dE0CSi_tF /ROOT/PROJECT/Local/smithy-swift/:0 CRTClientEngine.makeHttpRequestStreamOptions(_:_:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/CRT/CRTClientEngine.swift:110 closure #1 in CRTClientEngine.execute(request:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/CRT/CRTClientEngine.swift:96 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 $s19AwsCommonRuntimeKit10HttpHeaderV4name5value11compressionACSS_SSAA0eF11CompressionOtcfC /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeader.swift:23 HttpHeaders.getAll() /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeaders.swift:85 Headers.addAll(httpHeaders:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/Headers.swift:212 closure #1 in CRTClientEngine.makeHttpRequestStreamOptions(_:_:) /ROOT/PROJECT/Local/smithy-swift/Packages/ClientRuntime/Sources/Networking/Http/CRT/CRTClientEngine.swift:115 specialized closure #2 in HttpClientConnection.makeRequest(requestOptions:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpClientConnection.swift:68 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 $s19AwsCommonRuntimeKit10HttpHeaderV4name5value11compressionACSS_SSAA0eF11CompressionOtcfC /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpHeader.swift:24 specialized closure #2 in HttpClientConnection.makeRequest(requestOptions:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/http/HttpClientConnection.swift:68 s_default_malloc /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:54 aws_mem_acquire /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/allocator.c:126 aws_string_new_from_array /ROOT/PROJECT/Local/aws-crt-swift/aws-common-runtime/aws-c-common/source/string.c:196 $sSS19AwsCommonRuntimeKitE6asCStrSPys4Int8VGSgyF /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/crt/AWSString.swift:47 $sSS19AwsCommonRuntimeKitE13awsByteCursorSo0E12_byte_cursorVvg /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/Utilities.swift:27 specialized CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/Source/AwsCommonRuntimeKit/auth/credentials/CRTCredentials.swift:24 CRTCredentials.init(accessKey:secret:sessionToken:expirationTimeout:allocator:) /ROOT/PROJECT/Local/aws-crt-swift/:0 $s19AwsCommonRuntimeKit14CRTCredentialsC9accessKey6secret12sessionToken17expirationTimeout9allocatorACSS_S2SSgs6UInt64VAA9Allocator_ptcfC /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 $s16AWSClientRuntime14AWSCredentialsV9toCRTType09AwsCommonB3Kit14CRTCredentialsCyF /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/AWSClientRuntime/Sources/Auth/AWSCredentials.swift:26 AWSSigningConfig.toCRTType() /ROOT/Library/Developer/Xcode/DerivedData/Storage-aihphthgszdlsydovtyoarbyeekc/SourcePackages/checkouts/aws-sdk-swift/:0 ```

Any update on this? I am seeing Memory Allocation crashes that appear to stem from the aws-crt-swift package.