[WarpCTC] fix SIGFPE/CUDA error(700)/SIGSEGV when 0-size tensor passed to ctc_loss#78250
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DanielSun11 wants to merge 2 commits intoPaddlePaddle:developfrom
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[WarpCTC] fix SIGFPE/CUDA error(700)/SIGSEGV when 0-size tensor passed to ctc_loss#78250DanielSun11 wants to merge 2 commits intoPaddlePaddle:developfrom
DanielSun11 wants to merge 2 commits intoPaddlePaddle:developfrom
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…ssed to ctc_loss Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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你的PR提交成功，感谢你对开源项目的贡献! |
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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PR Category
Operator Mechanism
PR Types
Bug fixes
Description
paddle.nn.functional.ctc_loss 在传入 0-size 张量时会触发进程崩溃，本 PR 对三类场景进行修复。
修复了三类崩溃：
同时在sequence_padding.cu的GPUContext特化版本中添加0-size安全兜底保护。
新增TestCTCLossZeroSizeTensor单测类覆盖三种崩溃场景。
是否引起精度变化
否