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Include error information on error opening output file #2741

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guest271314 wants to merge 3 commits into from
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Include error information on error opening output file #2741

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6c78ed6
Update stream.cc
guest271314 Apr 13, 2026
968f267
WABT tools do not create directories that don't exist in path passed …
guest271314 Apr 13, 2026
40c6e62
Use one string literal
guest271314 Apr 13, 2026
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4 changes: 4 additions & 0 deletions README.md
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Expand Up @@ -303,6 +303,10 @@ being generated.

See [wasm2c.md](wasm2c/README.md)

## Running WABT tools

WABT tools do not create directories when they don't exist in path passed to `-o`.

## Running the test suite

See [test/README.md](test/README.md).
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2 changes: 1 addition & 1 deletion src/stream.cc
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Expand Up @@ -136,7 +136,7 @@ Result OutputBuffer::WriteToFile(std::string_view filename) const {
std::string filename_str(filename);
FILE* file = fopen(filename_str.c_str(), "wb");
if (!file) {
ERROR("unable to open %s for writing\n", filename_str.c_str());
ERROR("unable to open %s for writing: Directory in path passed to -o doesn't exist\n", filename_str.c_str());
return Result::Error;
}

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