Description: When we convert PPT presentations which contain font size as zero to PPTX. The resulting file can't be opened in PowerPoint OOXML expects font size to be at least 1pt. Steps to Reproduce: 1.Open the attached PPT 2.Save it as PPTX 3.Open the result in PowerPoint Actual Results: PowerPoint fails to open the presentation Expected Results: No issues when opening the file in PowerPoint Reproducible: Always User Profile Reset: Yes Additional Info: Running the file through officeotron, gives the below error: ERROR - (slideMasters/slideMaster1.xml:2 col:13 139) cvc-minInclusive-valid: Value '0' is not facet-valid with respect to minInclusive '100' for type 'ST_TextFontSize'. ERROR - (slideMasters/slideMaster1.xml:2 col:13 139) cvc-attribute.3: The value '0' of attribute 'sz' on element 'a:endParaRPr' is not valid with respect to its type, 'ST_TextFontSize'.
Created attachment 203315 [details] PPT file
Karthik committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/c995322f64530992eb9918a65d922e3294558b5c tdf#168843: Sanitize font size read from PPT It will be available in 26.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Karthik committed a patch related to this issue. It has been pushed to "libreoffice-25-8": https://git.libreoffice.org/core/commit/fabe470b421827d8087a614d1f790107f39bb754 tdf#168843: Sanitize font size read from PPT It will be available in 25.8.4. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Karthik Godha committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/5f1043dab5435ae036bcbca288ca5c55d4bd930f tdf#168843: Sanitize font size read from PPT It will be available in 26.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Karthik Godha committed a patch related to this issue. It has been pushed to "libreoffice-25-8": https://git.libreoffice.org/core/commit/12c639145df4450f7cba3abe0628ad016071a3a5 tdf#168843: Sanitize font size read from PPT It will be available in 25.8.4. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.