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RE: gcc 4.9.2 cygwin64 internal error parsing decimal float point values
- From: "Marc Reynolds" <marc dot b dot reynolds at gmail dot com>
- To: <cygwin at cygwin dot com>, <gcc-bugs at gcc dot gnu dot org>
- Date: Sun, 18 Jan 2015 14:18:44 +0100
- Subject: RE: gcc 4.9.2 cygwin64 internal error parsing decimal float point values
- Authentication-results: sourceware.org; auth=none
- References: <CAFnpKfakaez5xpSqBGr3X27_cv4M-pC7ZWkTZ90pEwPeQV+VOA at mail dot gmail dot com> <5412AC16 dot 3050503 at lip6 dot fr> <54acfb13 dot 82aec20a dot 4cb3 dot 6875 at mx dot google dot com> <54B39B02 dot 6030402 at inria dot fr> <54b39d4e dot ebbdc20a dot 21b2 dot 4718 at mx dot google dot com> <54B780BC dot 3090406 at lip6 dot fr> <54b816d3 dot 6c47c20a dot 3a84 dot 4155 at mx dot google dot com> <54B82131 dot 2040208 at lip6 dot fr> <54b8dea9 dot 8965b40a dot 54f5 dot ffffc0ef at mx dot google dot com> <54B8E726 dot 7060204 at lip6 dot fr> <54b8fbfd dot 690cb50a dot 2096 dot ffffea7e at mx dot google dot com> <54B8FF57 dot 6080204 at lip6 dot fr> <54ba5f45 dot e495b40a dot 4c59 dot 4607 at mx dot google dot com> <54BA9D86 dot 5000804 at gmail dot com>
If the bug is present then it will occur at any optimization level.
Given this further information I investigated and discovered the problem. My system somehow had a broken cygmpfr-4.dll installed in /bin. Given that the assert was from MPFR I should have checked this earlier but I naively assumed that MPFR would have been statically linked.
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