Experimental Physics and
Industrial Control System

Jerzy Tarasiuk via Core-talk <core-talk at aps.anl.gov> · Thu, 17 Jun 2021 14:45:17 -0000

modules/database/src/std/rec/biRecord.c
  argument to 'sizeof' in 'strncpy' call is the same
  expression as the source; did you mean to use the size
  of the destination? [-Wsizeof-pointer-memaccess]
  line:char 184:42 187:42 201:43 203:43 331:42 334:42

A sizeof znam/onam field size is used as the size limit
for strncpy; GCC suspects it to be a mistake and warns.
Unfortunately, the size is specified as a number in
biRecord.h - a fix should change the generator to use
a name and #define the name, and then use the name
instead the sizeof (using a number in the biRecord.c
would remove the warning, but the code would become
wrong without a warning if the size was changed later).

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https://bugs.launchpad.net/bugs/1905159

Title:
  Fix warnings from recent compiler versions

Status in EPICS Base:
  Triaged

Bug description:
  Builds of EPICS Base using recent versions of gcc, clang and MSVC
  generate compiler warnings, which we try to minimize if possible. Some
  of these warnings can be prevented with suitable code modifications,
  although the code must still build on the older compilers and other
  architectures that we support.

  Both the 3.15 and 7.0 branches can be examined for warnings; fixes
  made on the 3.15 branch get propagated to the 7.0 branch during
  periodic up-merges, so there is no need to make the same changes to
  both branches. Some code only exists on one branch; for example the
  gdd module was unbundled after 3.15, and there are many new modules in
  7.0.

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System