fix tinyformat#78793
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Pull request overview
This PR adjusts Paddle’s bundled tinyformat-based printf utilities to avoid crashing (assert/abort) when the format string’s conversion specifiers don’t match the provided arguments, aiming to preserve more useful PADDLE_ENFORCE error context.
Changes:
- Replace tinyformat’s assert-based error path with a thrown
detail::FormatError. - Add catch/fallback behavior in
paddle::string::Fprintf/Sprintfto output/return the raw format string on format errors.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 7 comments.
| File | Description |
|---|---|
| paddle/utils/string/tinyformat/tinyformat.h | Replaces TINYFORMAT_ERROR assert handling with detail::FormatError exceptions thrown on format errors. |
| paddle/utils/string/printf.h | Wraps tinyformat formatting calls with try/catch to fall back to raw format strings when a FormatError is raised. |
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| "tinyformat: Cannot convert from argument type to " | ||
| "integer for use as variable width or precision"); | ||
| throw FormatError(); | ||
| return 0; |
| TINYFORMAT_ERROR( | ||
| "tinyformat: Not enough conversion specifiers in format string"); | ||
| throw FormatError(); | ||
| return fmtStart; |
| // Check args remain after reading any variable width/precision | ||
| TINYFORMAT_ERROR("tinyformat: Not enough format arguments"); | ||
| throw FormatError(); | ||
| return; |
| void Fprintf(std::ostream& out, const char* fmt, const Args&... args) { | ||
| tinyformat::vformat(out, fmt, tinyformat::makeFormatList(args...)); | ||
| try { | ||
| tinyformat::vformat(out, fmt, tinyformat::makeFormatList(args...)); |
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| std::string Sprintf(const char* fmt, const Args&... args) { | ||
| std::ostringstream oss; | ||
| Fprintf(oss, fmt, args...); | ||
| return oss.str(); | ||
| try { | ||
| std::ostringstream oss; | ||
| Fprintf(oss, fmt, args...); | ||
| return oss.str(); | ||
| } catch (const tinyformat::detail::FormatError&) { | ||
| return fmt; | ||
| } |
| void Fprintf(std::ostream& out, const char* fmt, const Args&... args) { | ||
| tinyformat::vformat(out, fmt, tinyformat::makeFormatList(args...)); | ||
| try { | ||
| tinyformat::vformat(out, fmt, tinyformat::makeFormatList(args...)); |
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| // Error handling: Format errors throw detail::FormatError, which is caught | ||
| // at the public API level to fall back to the raw format string. |
zrr1999
approved these changes
Apr 29, 2026
|
✅ Cherry-pick successful! Created PR: #78843 |
|
✅ Cherry-pick successful! Created PR: #78844 |
sneaxiy
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PR Category
Execute Infrastructure
PR Types
Improvements
Description
删除tinyformat里的assert，防止PADDLE_ENFORCE %个数和变量不匹配时，崩溃在assert上而没有提供PADDLE_ENFORCE更有价值的信息。
业务上发生了这种情况。但不可解释的是，assert只在DEBUG编译下才生效，为何发版的包assert会生效暂时没有找到。
通过如下方式复现问题
此后验证本PR，能够有效disable掉assert的崩溃。
但H卡Coverage，test_dygraph_sharding_stage3_for_eager等3个单测会崩溃在PrepareStridedOut中：
重命名后问题消失，可能是编译链接错函数了？无法解释。
是否引起精度变化
否