auracaster/sw_openocd
3
0
Fork 0
forked from auracaster/openocd
Code Pull Requests Activity

helper/binarybuffer: fix clang static analyzer warnings

Browse Source 
Writing bits to an uninitialized buffer generated false warnings.
Zero buffers before setting them by buf_set_u32|64()
(do it only if bit-by-bit copy loop is used,
zeroed buffer is not necessary if a fast path write is used)

Change-Id: I2f7f8ddb45b0cbd08d3e249534fc51f4b5cc6694
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/5383
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This commit is contained in:
Tomas Vanek
2019-12-20 23:56:08 +01:00
parent 4e981bc27c
commit a2e822834d
16 changed files with 40 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/helper/binarybuffer.h
View File

@@ -33,6 +33,7 @@
* using the bits in @c value. This routine fast-paths writes
* of little-endian, byte-aligned, 32-bit words.
* @param _buffer The buffer whose bits will be set.
* Do not use uninitialized buffer or clang static analyzer emits a warning.
* @param first The bit offset in @c _buffer to start writing (0-31).
* @param num The number of bits from @c value to copy (1-32).
* @param value Up to 32 bits that will be copied to _buffer.
@@ -62,6 +63,7 @@ static inline void buf_set_u32(uint8_t *_buffer,
* using the bits in @c value. This routine fast-paths writes
* of little-endian, byte-aligned, 64-bit words.
* @param _buffer The buffer whose bits will be set.
* Do not use uninitialized buffer or clang static analyzer emits a warning.
* @param first The bit offset in @c _buffer to start writing (0-63).
* @param num The number of bits from @c value to copy (1-64).
* @param value Up to 64 bits that will be copied to _buffer.