Dana Jansens f6ca4ea199 Avoid a space in the UDL definition (#3610) ... * Avoid a space in the UDL definition except on GCC before 4.9 Clang 18 has grown a warning about the space being deprecated which is enabled by default in their nightly binaries. However GCC before 4.9 will reject the UDL definition unless there is a space there, so we need to keep the space conditionally for it. * Remove UDLs on GCC before 4.9 to simplify things GCC before 4.9 rejects the syntax that is now rejected on more modern compilers. * Disable compile-error-test on GCC < 4.9 This avoids the UDL tests failing as GCC < 4.9 can not parse UDLs without a space, but the space is malformed in modern compilers.		2023-09-18 08:09:42 -07:00
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fmt	Avoid a space in the UDL definition (#3610)	2023-09-18 08:09:42 -07:00