[flang][runtime] Don't always accept a bare exponent letter #151597
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For more accurate compatibility with other compilers' extensions, accept a bare exponent letter as valid real input to a formatted READ statement only in a fixed-width input field. So it works with (G1.0) editing, but not (G)/(D)/(E)/(F) or list-directed input. Fixes llvm#151465.
eugeneepshteyn
approved these changes
Jul 31, 2025
akuhlens
reviewed
Aug 4, 2025
| {"(RU,E9.1)", " 1.0E-325", 0x1, 0}, | ||
| {"(E9.1)", "-1.0E-325", 0x8000000000000000, 0}, | ||
| {"(RD,E9.1)", "-1.0E-325", 0x8000000000000001, 0}, | ||
| {"(F7.0))", "+NaN(q)", 0x7ff8000000000000, 0}, |
akuhlens
approved these changes
Aug 4, 2025
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For more accurate compatibility with other compilers' extensions, accept a bare exponent letter as valid real input to a formatted READ statement only in a fixed-width input field. So it works with (G1.0) editing, but not (G)/(D)/(E)/(F) or list-directed input.
Fixes #151465.