os: Fix os_log() handling of '%.*P' [4.2] #15104
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- When a count was part of the format string, we looked at the wrong character when forming the count. - The OSLF_CMD_TYPE_DATA command type expects a pointer preceded by a OSLF_CMD_TYPE_COUNT command, not 'count' bytes inline. Fixes <rdar://problem/38080623>.
slavapestov
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@swift-ci Please test |
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When a count was part of the format string, we looked at the
wrong character when forming the count.
The OSLF_CMD_TYPE_DATA command type expects a pointer preceded
by a OSLF_CMD_TYPE_COUNT command, not 'count' bytes inline.
Fixes rdar://problem/38080623.