VS Arduino - ESP32 E0070: incomplete type is not allowed and E0075: operand of '*' must be a pointer

Apr 30^th, 2026 at 9:31am (UTC)

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VS Arduino › › › ESP32 E0070: incomplete type is not allowed and E0075: operand of '*' must be a pointer

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ESP32 E0070: incomplete type is not allowed and E0075: operand of '*' must be a pointer (Read 3710 times)

paulnd Newbies Offline Posts: 4 Joined: Feb 3^rd, 2019	*ESP32 E0070: incomplete type is not allowed and E0075: operand of '' must be a pointer** Dec 7^th, 2020 at 9:58am	Print Post
	Hello, I'm compiling for a ESP32 board for the first and encoutering these errors "E0070 incomplete type is not allowed xtruntime-core-state.h lines 166-171" which is this line STRUCT_AFIELD_A(char,1,XCHAL_CP0_SA_ALIGN,CS_SA_,cp0,XCHAL_CP0_SA_SIZE) "E0075 operand of '' must be a pointer random.h lines 80-82" "E0075 operand of '' must be a pointerstl_bvector.h line 68" I found this when googling the first error https://github.com/espressif/esp-idf/issues/2744 which suggested that its a Visual Micro configuration error? I'll be grateful for suggestions/assistance please on how to resolve these errors. Thanks Paul
	« Last Edit: Dec 7^th, 2020 at 10:07am by paulnd »

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Simon@Visual Micro Administrator Offline Posts: 2898 Joined: Feb 13^th, 2019	*Re: ESP32 E0070: incomplete type is not allowed and E0075: operand of '' must be a pointer Reply #1 -** Dec 7^th, 2020 at 10:20am	Print Post
	Thanks for the report. Can you attach the contents of the Output > Micro Build window, with the settings shown at the top of this page, for a clean build? If it is possible to supply the sketch in use it would help greatly with our investigation.


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paulnd Newbies Offline Posts: 4 Joined: Feb 3^rd, 2019	*Re: ESP32 E0070: incomplete type is not allowed and E0075: operand of '' must be a pointer Reply #2 -** Dec 7^th, 2020 at 12:30pm	Print Post
	Hello, it seems that these errors only appear in the error list but don't prevent the project from being built. I am now encountering other errors in the build after adding libraries Error list Code Severity Code Description Project File Line Suppression State Error (active) E1696 cannot open source file "Update.h" RollerBlind_Single ries\ArduinoOTA\src\ArduinoOTA.h 6 Error (active) E1696 cannot open source file "AsyncTCP.h" RollerBlind_Single E:\Documents\Arduino\libraries\fauxmoESP\src\fauxmoESP.h 64 Error 64:26: fatal error: AsyncTCP.h: No such file or directory E:\Documents\Arduino\libraries\fauxmoESP\src\fauxmoESP.h 64 Error (active) E0070 incomplete type is not allowed RollerBlind_Single \sdk\include\esp32\xtensa\xtruntime-core-state.h 166 Error (active) E0070 incomplete type is not allowed RollerBlind_Single \sdk\include\esp32\xtensa\xtruntime-core-state.h 167 Error (active) E0070 incomplete type is not allowed RollerBlind_Single \sdk\include\esp32\xtensa\xtruntime-core-state.h 168 Error (active) E0070 incomplete type is not allowed RollerBlind_Single \sdk\include\esp32\xtensa\xtruntime-core-state.h 169 Error (active) E0070 incomplete type is not allowed RollerBlind_Single \sdk\include\esp32\xtensa\xtruntime-core-state.h 170 Error (active) E0070 incomplete type is not allowed RollerBlind_Single \sdk\include\esp32\xtensa\xtruntime-core-state.h 171 Error (active) E0075 operand of '' must be a pointer RollerBlind_Single \1.22.0-80-g6c4433a-5.2.0\xtensa-esp32-elf\include\c++\5.2.0\bits\random.h 80 Error (active) E0075 operand of '' must be a pointer RollerBlind_Single \1.22.0-80-g6c4433a-5.2.0\xtensa-esp32-elf\include\c++\5.2.0\bits\random.h 81 Error (active) E0075 operand of '' must be a pointer RollerBlind_Single \1.22.0-80-g6c4433a-5.2.0\xtensa-esp32-elf\include\c++\5.2.0\bits\random.h 82 Error (active) E0135 namespace "std" has no member "nothrow_t" RollerBlind_Single e.h 836 Error (active) E0075 operand of '' must be a pointer RollerBlind_Single \1.22.0-80-g6c4433a-5.2.0\xtensa-esp32-elf\include\c++\5.2.0\bits\stl_bvector.h 68 Warning compilation terminated Warning In file included from E:\Documents\Visual Studio 2017\Arduino\RollerBlind_Single\RollerBlind_Single.ino 5 Build output and sketch are attached
	« Last Edit: Dec 7^th, 2020 at 12:30pm by paulnd »
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Tim@Visual Micro Administrator Offline Posts: 12204 Location: United Kingdom Joined: Apr 10^th, 2010	*Re: ESP32 E0070: incomplete type is not allowed and E0075: operand of '' must be a pointer Reply #3 -** Dec 7^th, 2020 at 8:04pm	Print Post
	There are probably two seperate issues. One is a build error because the AsyncTCP library can't be found. Do you have it installed? It is here if not. https://github.com/me-no-dev/AsyncTCP/archive/master.zip The other is confusion with the Visual Studio intellisense that is seperate to the build process. It is possible to alter the combo box above the errors list to "Build Only". Then you will only see the more accurate build errors. Alternatively above the errors list is another combo that can be set to Project Only, that will exclude the underlying sources from intellisense error reporting.


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paulnd Newbies Offline Posts: 4 Joined: Feb 3^rd, 2019	*Re: ESP32 E0070: incomplete type is not allowed and E0075: operand of '' must be a pointer Reply #4 -** Dec 8^th, 2020 at 5:46pm	Print Post
	thanks for your help


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