Opened 4 years ago
Closed 4 years ago
#4791 closed defect (fixed)
segfault in ST_Square
| Reported by: | tobwen | Owned by: | pramsey |
|---|---|---|---|
| Priority: | critical | Milestone: | PostGIS 3.1.0 |
| Component: | postgis | Version: | master |
| Keywords: | ST_Square, segfault, segmentation fault | Cc: |
Description
bug
I've written a small snippet to create single gridcells. After execution, PG's backend segfaults.
fix
RhodiumToad on Freenode helped me to debug it. Here's his result:
postgis/lwgeom_generate_grid.c: line 420, the PG_FREE_IF_COPY has a parameter number of 1, which is not the parameter the value came from, which is 3
so it tries to free something incorrectly and dies
affected versions
Seems like all 3.x versions are affected.
Change History (2)
comment:1 by , 4 years ago
comment:2 by , 4 years ago
| Milestone: | PostGIS 3.0.3 → PostGIS 3.1.0 |
|---|---|
| Resolution: | → fixed |
| Status: | new → closed |
| Version: | 3.0.x → master |
Note:
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Other functions might also be affected: ST_Hexagon (etc.) also has three arguments, but
PG_FREE_IF_COPY(gorigin, 1);in code.