Bug 17075 – ctRegex BacktrackingMatcher.prevStack: free(): invalid pointer

Created attachment 1633 Input that triggers the crash Download http://pastebin.com/raw/UVF41mPf and pipe it into the following: import std.stdio; import std.regex; import std.conv; enum titlePattern = `<title>(.+)</title>`; static titleRegex = ctRegex!titlePattern; void main() { auto content = stdin.byLineCopy.to!string; auto hits = content.matchAll(titleRegex); } ---------- *** Error in `./test': free(): invalid pointer: 0x0000000000f42148 *** ======= Backtrace: ========= /usr/lib/libc.so.6(+0x70c4b)[0x7fef85a22c4b] /usr/lib/libc.so.6(+0x76fe6)[0x7fef85a28fe6] /usr/lib/libc.so.6(+0x777de)[0x7fef85a297de] ./test(nothrow @nogc @trusted bool std.regex.internal.backtracking.BacktrackingMatcher!(true).BacktrackingMatcher!(char, std.regex.internal.ir.Input!(char).Input).BacktrackingMatcher.prevStack()+0x90)[0x4 cd2b8] [...] Tested on two machines, both running linux.

*** Issue 15593 has been marked as a duplicate of this issue. ***

Commits pushed to stable at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/d47c8859bcb2bffc684fc4d6b57e4f5ed0ec5441 Fix issue 17075 ctRegex BacktrackingMatcher.prevStack: free(): invalid pointer https://github.com/dlang/phobos/commit/091ff0f8bbd8383e81eddfca8e0299178825301f Merge pull request #5252 from DmitryOlshansky/issue-17075 Fix issue 17075 ctRegex BacktrackingMatcher.prevStack: free(): invali… merged-on-behalf-of: H. S. Teoh <[email protected]>

Commits pushed to master at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/d47c8859bcb2bffc684fc4d6b57e4f5ed0ec5441 Fix issue 17075 ctRegex BacktrackingMatcher.prevStack: free(): invalid pointer https://github.com/dlang/phobos/commit/091ff0f8bbd8383e81eddfca8e0299178825301f Merge pull request #5252 from DmitryOlshansky/issue-17075

Commits pushed to newCTFE at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/d47c8859bcb2bffc684fc4d6b57e4f5ed0ec5441 Fix issue 17075 ctRegex BacktrackingMatcher.prevStack: free(): invalid pointer https://github.com/dlang/phobos/commit/091ff0f8bbd8383e81eddfca8e0299178825301f Merge pull request #5252 from DmitryOlshansky/issue-17075

Commits pushed to dmd-cxx at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/d47c8859bcb2bffc684fc4d6b57e4f5ed0ec5441 Fix issue 17075 ctRegex BacktrackingMatcher.prevStack: free(): invalid pointer https://github.com/dlang/phobos/commit/091ff0f8bbd8383e81eddfca8e0299178825301f Merge pull request #5252 from DmitryOlshansky/issue-17075