digitalmars.D - Improve error message for "function is not callable using argument"
- ryuukk_ (16/16) Apr 02 2023 ```
- Paul Backus (39/55) Apr 03 2023 I attempted to reproduce your issue using the following example
``` Error: function `proxy.injector.RemoteLibraryFunction(void* hProcess, const(wchar)* lpModuleName, const(wchar)* lpProcName, void* lpParameters, ulong dwParamSize, void** ppReturn)` is not callable using argument types `(void*, const(wchar)*, wchar[512], void*, int, void**)` ``` While writing this post i just remembered that i attempted a PR few years ago: https://github.com/dlang/dmd/pull/13366 This is always painful to read/decipher, can this error be improved? At least colors/arrows to tell me wich argument(s) are wrong Perhaps on a new line? Unfortunately, I have no ideas how to improve it, anyone mind helping me? Thanks!
Apr 02 2023
On Sunday, 2 April 2023 at 13:43:59 UTC, ryuukk_ wrote:``` Error: function `proxy.injector.RemoteLibraryFunction(void* hProcess, const(wchar)* lpModuleName, const(wchar)* lpProcName, void* lpParameters, ulong dwParamSize, void** ppReturn)` is not callable using argument types `(void*, const(wchar)*, wchar[512], void*, int, void**)` ``` While writing this post i just remembered that i attempted a PR few years ago: https://github.com/dlang/dmd/pull/13366 This is always painful to read/decipher, can this error be improved? At least colors/arrows to tell me wich argument(s) are wrong Perhaps on a new line? Unfortunately, I have no ideas how to improve it, anyone mind helping me? Thanks!I attempted to reproduce your issue using the following example code: ```d void RemoteLibraryFunction( void* hProcess, const(wchar)* lpModuleName, const(wchar)* lpProcName, void* lpParameters, ulong dwParamSize, void** ppReturn ); void main() { void* vp; const(wchar)* cwcp; wchar[512] wca; int n; void** vpp; RemoteLibraryFunction(vp, cwcp, wca, vp, n, vpp); } ``` Attempting to compile this code with DMD v2.102.2 produced the following output: ``` example.d(18): Error: function `example.RemoteLibraryFunction(void* hProcess, const(wchar)* lpModuleName, const(wchar)* lpProcName, void* lpParameters, ulong dwParamSize, void** ppReturn)` is not callable using argument types `(void*, const(wchar)*, wchar[512], void*, int, void**)` example.d(18): cannot pass argument `wca` of type `wchar[512]` to parameter `const(wchar)* lpProcName` ``` Note the last line, which points out the specific argument that does not match. According to the changelog, that line was added in DMD v2.079.0: https://dlang.org/changelog/2.079.0.html#argument-mismatch So, unless you are using an extremely old D compiler, you should be seeing that line in your compiler's output.
Apr 03 2023