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| author | Ben Gamari <ben@smart-cactus.org> | 2019-07-26 10:32:25 -0400 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2019-08-02 22:20:50 -0400 |
| commit | 4664bafcb8db9f7cbcc9d16b0b1d381650b682c2 (patch) | |
| tree | 5a0e87b51c6a8e5d730953df94765c6e23cb803c /rts/Profiling.c | |
| parent | 0ecacb1ee6d353f85b83a63941b6e26f1ff9f4db (diff) | |
| download | haskell-4664bafcb8db9f7cbcc9d16b0b1d381650b682c2.tar.gz | |
rts: Always truncate output files
Previously there were numerous places in the RTS where we would fopen
with the "w" flag string. This is wrong as it will not truncate the
file. Consequently if we write less data than the previous length of the
file we will leave garbage at its end.
Fixes #16993.
Diffstat (limited to 'rts/Profiling.c')
| -rw-r--r-- | rts/Profiling.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/rts/Profiling.c b/rts/Profiling.c index f340a63cff..b91129ed98 100644 --- a/rts/Profiling.c +++ b/rts/Profiling.c @@ -263,7 +263,7 @@ initProfilingLogFile(void) sprintf(prof_filename, "%s.prof", stem); /* open the log file */ - if ((prof_file = __rts_fopen(prof_filename, "w")) == NULL) { + if ((prof_file = __rts_fopen(prof_filename, "w+")) == NULL) { debugBelch("Can't open profiling report file %s\n", prof_filename); RtsFlags.CcFlags.doCostCentres = 0; // Retainer profiling (`-hr` or `-hr<cc> -h<x>`) writes to |