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#20411 fix Yaml parsing for very long quoted strings#21279
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stof requested changesJan 13, 2017
| { | ||
| $longStringWithQuotes =str_repeat("x\r\n\\\"x\"x",1000); | ||
| $yamlString = Inline::dump(['longStringWithQuotes' =>$longStringWithQuotes]); |
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the short array syntax does not work on PHP 5.3, which is still supported by Symfony 2.7. Please change it.
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Sorry, good point.
I've pushed a new version.
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stof commentedJan 13, 2017
👍 (once the PHP 5.3 compat is fixed of course) |
100a0ce to51bca66Comparestof approved these changesJan 13, 2017
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xabbuh commentedJan 14, 2017
Thank you@RichardBradley. |
xabbuh added a commit that referenced this pull requestJan 14, 2017
…ardBradley)This PR was merged into the 2.7 branch.Discussion----------#20411 fix Yaml parsing for very long quoted strings| Q | A| ------------- | ---| Branch? | 2.7| Bug fix? | yes| New feature? | no| BC breaks? | no| Deprecations? | no| Tests pass? | yes| Fixed tickets |#20411| License | MIT| Doc PR | noThisfixes#20411, a YAML string with too many backslash escapes can trigger a `PREG_BACKTRACK_LIMIT_ERROR` error in the Yaml parser.There should be no behavioural change other than the bug fixI have included a test which fails before this fix and passes after this fix.Commits-------51bca66#20411 fix Yaml parsing for very long quoted strings
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This was referencedFeb 6, 2017
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fabpot added a commit that referenced this pull requestMar 17, 2017
…ardBradley)This PR was squashed before being merged into the 2.7 branch (closes#21523).Discussion----------#20411 fix Yaml parsing for very long quoted strings| Q | A| ------------- | ---| Branch? | 2.7| Bug fix? | yes| New feature? | no| BC breaks? | no| Deprecations? | no| Tests pass? | yes| Fixed tickets |#20411| License | MIT| Doc PR | noThis is a second fix for the issue discussed in#20411. My first PR (#21279) didn't fix the bug in all cases, sorry.If a YAML string has too many spaces in the value, it can trigger a `PREG_BACKTRACK_LIMIT_ERROR` error in the Yaml parser.There should be no behavioural change other than the bug fixI have included a test which fails before this fix and passes after this fix.I have also added checks that detect other PCRE internal errors and throw a more descriptive exception. Before this patch, the YAML engine would often give incorrect results, rather than throwing, on a PCRE `PREG_BACKTRACK_LIMIT_ERROR` error.Commits-------c9a1c09#20411 fix Yaml parsing for very long quoted strings
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Thisfixes#20411, a YAML string with too many backslash escapes can trigger a
PREG_BACKTRACK_LIMIT_ERRORerror in the Yaml parser.There should be no behavioural change other than the bug fix
I have included a test which fails before this fix and passes after this fix.