Example fails on macOS

[BernCPlusPlus]

On a MacMini (3 GHz Intel Core i5) with macOS 10.14.6 the example test suite application fails with the following errors right out of the box:

-------------------------------------------------------------------------
               __________                                 ____  ___
    _____  __ _\______   \_____ _______  ______ __________\   \/  /
   /     \|  |  \     ___/\__  \\_  __ \/  ___// __ \_  __ \     / 
  |  Y Y  \  |  /    |     / __ \|  | \/\___ \\  ___/|  | \/     \ 
  |__|_|  /____/|____|    (____  /__|  /____  >\___  >__| /___/\  \
        \/                     \/           \/     \/           \_/
  Version 4.0.11 (2021-11-23)
  Copyright (C) 2021 Ingo Berg, et al.

-------------------------------------------------------------------------

Build configuration:

- RELEASE build
- ASCII build
- compiled with GCC Version 4.2.1
- IEEE 754 (IEC 559) is available
- 64 bit
- Floating point type is "d" (15 Digits)

-------------------------------------------------------------------------

Running test suite:

testing parser value types...passed
testing implicit definition of undefined variables...passed
testing error codes...
  Expression: "(1+3i)/(8*9i)+"hallo""  Code:1  Expected:44
  Expression: "(1+3i)/(8*9i)-"hallo""  Code:1  Expected:44
  Expression: "(1+3i)/(8*9i)*"hallo""  Code:1  Expected:44
  Expression: "(1+3i)/(8*9i)/"hallo""  Code:1  Expected:44
  Expression: "3n[1]"  Code:1  Expected:40
  failed with 5 errors
testing sample equations...passed
testing if-else conditional...passed
testing string functions...passed
testing matrix calculations...passed
testing complex calculations...
  1i : Undefined token "1i" found at position 0.
  norm(3+4i) : Undefined token "4i" found at position 7.
  norm(4i+3) : Undefined token "4i" found at position 5.
  norm(3i+4) : Undefined token "3i" found at position 5.
  real(4.1i+3.1) : Undefined token "4" found at position 5.
  imag(3.1i+4.1) : Undefined token "3" found at position 5.
  imag(2.1i) : Undefined token "2" found at position 5.
  -(4i+5) : Undefined token "4i" found at position 2.
  a=1+2i : Undefined token "2i" found at position 4.
  -(1+2i) : Undefined token "2i" found at position 4.
  -(-1-2i) : Undefined token "2i" found at position 5.
  (2+4i)*(8-6i) : Undefined token "4i" found at position 3.
  (-1+5i)^2 : Undefined token "5i" found at position 4.
  c=(a=1+2i) : Undefined token "2i" found at position 7.
  failed with 14 errors
testing vector operations...passed
testing binary operators...passed
testing postfix operators...
  1n : Undefined token "1n" found at position 0.
  8n : Undefined token "8n" found at position 0.
  8n : Undefined token "8n" found at position 0.
  failed with 3 errors
testing infix operators...passed
testing multiarg functions...passed
testing script features...passed
testing value reader...passed
testing github issue reports...passed
Test failed with 22 errors (612 expressions)
-------------------------------------------------------------------------

Special parser functions:
  list_var()   - list parser variables and return the number of variables.
  list_fun()   - list parser functions and return  the number of functions
  list_const() - list all numeric parser constants
Command line commands:
  exprvar      - list all variables found in the last expression
  rpn          - Dump reverse polish notation of the current expression
  quit         - exits the parser
Constants:
  "e"   2.718281828459045235360287
  "pi"  3.141592653589793238462643
-------------------------------------------------------------------------

[beltoforion]

The compiler is too old. GCC 4.2.1 was released on July 18, 2007. I cant support legacy systems.

[BernCPlusPlus]

I get the same issue on macOS 12.6.1, which is (almost) the latest Apple OS. I think that's because gcc on macOS is just an alias for the built-in LLVM compiler, and gcc -v gives me

Apple clang version 14.0.0 (clang-1400.0.29.102)
Target: arm64-apple-darwin21.6.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

So if you plan on supporting macOS you should definitely look into this.

[beltoforion]

Core problem is that i cannot fix what i cannot reproduce. Clang works just fine for me with Visual Studio. This issue will remain until it trickles into Visual Studios clang compiler or someone else submits a fix.

[BernCPlusPlus]

Well, really all you need to do on a Mac is execute brew install cmake (assuming you have Homebrew installed) and then do cmake CMakelists.txt followed by a make all. Then execute ./examples and you're right where I was. Same result on macOS 10.14.6 and 12.6.1.

[beltoforion]

I cannot do anything on this Issue unless it also appear on a System I have access too. This is an Open Source project so if someone sees this and wants to debug the issue I will gladly merge a fix. That is all I can reasonably offer.

[nalinigans]

Not sure of a fix yet. But this - https://discourse.llvm.org/t/different-behavior-from-stringstream-operator-in-libc-vs-libstdc/57482 - seems to be the issue.

[beltoforion]

Closed; Issue is fixed