wasp/todo at main · pannous/wasp · GitHub

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  This is a separate issue related to GC type handling in wasmtime. The string parameter to InitWindow is being passed as i32 (pointer) but wasmtime with GC enabled expects a reference type. This would require investigating the wasm_emitter's code generation for string literals in FFI calls.


rune for char/codepoint

in homebrew-wasp/Formula/wasp.rb
update tag on each release!
  url "https://github.com/pannous/wasp.git", :using => :git, :tag => "release-2025-07-10"


__builtin_wasm_memory_grow
size_t __builtin_wasm_memory_size(int);

len("hi")
lenxx("hi")  unknown function error!!

restored


`${1+1}`


=================================================================
==16555==ERROR: AddressSanitizer: stack-use-after-return on address 0xe8fd313e5760 at pc 0xc96364bfb844 bp 0xffffc5ea02d0 sp 0xffffc5ea02c0
READ of size 32 at 0xe8fd313e5760 thread T0
    #0 0xc96364bfb840 in String::operator%(char const*) /home/ubuntu/wasp/source/own_merge/../String.h:664
    #1 0xc96364c4577c in Wasp::parseTemplate() (/mnt/me/dev/apps/wasp/build/wasp+0x9a577c) (BuildId: 2d31b8cd75282604d48846fa32783524c7c99da3)
    #2 0xc96364c45b10 in Wasp::quote(char32_t) (/mnt/me/dev/apps/wasp/build/wasp+0x9a5b10) (BuildId: 2d31b8cd75282604d48846fa32783524c7c99da3)
    #3 0xc96364c59dd0 in Wasp::valueNode(char32_t, Node*) (/mnt/me/dev/apps/wasp/build/wasp+0x9b9dd0) (BuildId: 2d31b8cd75282604d48846fa32783524c7c99da3)
    #4 0xc96364c396e0 in Wasp::parse(char const*, ParserOptions) (/mnt/me/dev/apps/wasp/build/wasp+0x9996e0) (BuildId: 2d31b8cd75282604d48846fa32783524c7c99da3)
    #5 0xc96364c202e0 in parse(String, ParserOptions) /home/ubuntu/wasp/source/Wasp.cpp:2177
    #6 0xc96364f97a44 in compile(String, bool) /home/ubuntu/wasp/source/wasm_emitter.cpp:4391
    #7 0xc96364e3dc50 in eval(String) /home/ubuntu/wasp/source/Angle.cpp:379
    #8 0xc96364d31c70 in testReturnTypes() /home/ubuntu/wasp/source/tests.cpp:48
    #9 0xc96364e096c8 in testCurrent /home/ubuntu/wasp/source/tests.cpp:3950
    #10 0xc96364c1d5a8 in main /home/ubuntu/wasp/source/Wasp.cpp:1974
    #11 0xe8fd346284c0 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
    #12 0xe8fd34628594 in __libc_start_main_impl ../csu/libc-start.c:360
    #13 0xc96364baba6c in _start (/mnt/me/dev/apps/wasp/build/wasp+0x90ba6c) (BuildId: 2d31b8cd75282604d48846fa32783524c7c99da3)

Address 0xe8fd313e5760 is located in stack of thread T0 at offset 96 in frame
    #0 0xc96364c004fc in String::replace(char const*, char const*, int) /home/ubuntu/wasp/source/own_merge/../String.h:1105

  This frame has 3 object(s):
    [32, 64) '<unknown>'
    [96, 128) '<unknown>' <== Memory access at offset 96 is inside this variable
    [160, 192) '<unknown>'
HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork
      (longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-use-after-return /home/ubuntu/wasp/source/own_merge/../String.h:664 in String::operator%(char const*)