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Fix bug in StdStream.print #4180

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merged 9 commits into from
Aug 26, 2022
Merged

Fix bug in StdStream.print #4180

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9d0f44c
Fix unwanted indentation in `StdStream.print`
leonardoce Aug 21, 2022
83b7b1f
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
ef532e7
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
7d56599
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
b50976c
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
6f9384d
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
83b463a
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
b181ec7
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
84bdfda
Update .release-notes/4180.md
SeanTAllen Aug 26, 2022
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7 changes: 7 additions & 0 deletions .release-notes/4180.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
## Fix bug in `StdStream.print`

When printing via `StdStream.print` strings containing null bytes, the standard library was printing the string until the first null byte and then padding the printed string with space characters until the string size was reached.

This bug was introduced in Pony 0.12.0 while fixing a different printing bug.

We've fixed the bug so that printing strings with null bytes works as expected.
6 changes: 2 additions & 4 deletions src/libponyrt/lang/stdfd.c
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Expand Up @@ -515,10 +515,8 @@ PONY_API size_t pony_os_stdin_read(char* buffer, size_t space)

PONY_API void pony_os_std_print(FILE* fp, char* buffer, size_t len)
{
if(len == 0)
fprintf(fp, "\n");
else
fprintf(fp, "%*.*s\n", (int)len, (int)len, buffer);
fwrite(buffer, len, 1, fp);
fprintf(fp, "\n");
}

PONY_API void pony_os_std_write(FILE* fp, char* buffer, size_t len)
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