https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118774
Bug ID: 118774 Summary: Tab skips miscalculated with 'stream' write Product: gcc Version: 15.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libfortran Assignee: unassigned at gcc dot gnu.org Reporter: jvdelisle at gcc dot gnu.org Target Milestone: --- This test case found during review of patch for PR114618. program z3 implicit none integer, parameter :: wp = kind(0d0) real(kind=wp) :: pi = 3.14159265358979323846264338_wp character(len=*), parameter:: fmt1 = '(19("."),t1,g0,1x,t21,g0)' character(len=*), parameter:: fmt2 = '(19("."),t1,g0," ",t21,g0)' character(21) :: output1, output2 write (*, fmt1) 'RADIX', radix(pi) write (*, fmt2) 'RADIX', radix(pi) open (10, form="formatted") write(10, fmt1) 'RADIX', radix(pi) write(10, fmt2) 'RADIX', radix(pi) close(10) open (11, form="formatted", access="stream") write(11, fmt1) 'RADIX', radix(pi) write(11, fmt2) 'RADIX', radix(pi) close(11) end program z3 Output: % head fort.10 fort.11 ==> fort.10 <== RADIX.............. 2 RADIX ............. 2 ==> fort.11 <== RADIX 2............ RADIX 2...........