mirror of git://sourceware.org/git/glibc.git
ae5062201d
The C standard requires that ungetc guarantees at least one pushback, but the malloc call to allocate the pushback buffer could fail, thus violating that requirement. Fix this by adding a single byte pushback buffer in the FILE struct that the pushback can fall back to if malloc fails. The side-effect is that if the initial malloc fails and the 1-byte fallback buffer is used, future resizing (if it succeeds) will be 2-bytes, 4-bytes and so on, which is suboptimal but it's after a malloc failure, so maybe even desirable. A future optimization here could be to have the pushback code use the single byte buffer first and only fall back to malloc for subsequent calls. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Maciej W. Rozycki <macro@redhat.com> |
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| types | ||
| stdio-ldbl.h | ||
| stdio.h | ||
| stdio2-decl.h | ||
| stdio2.h | ||