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add error message clarification for inputs as process substitution

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Yann Collet
2025-03-26 19:21:48 -07:00
parent a293cdcb85
commit 8626da73b6
1 changed files with 3 additions and 0 deletions
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programs/fileio.c
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@ -660,6 +660,9 @@ FIO_openDstFile(FIO_ctx_t* fCtx, FIO_prefs_t* const prefs,
#endif
if (f == NULL) {
DISPLAYLEVEL(1, "zstd: %s: %s\n", dstFileName, strerror(errno));
if (UTIL_isFileDescriptorPipe(dstFileName)) {
DISPLAYLEVEL(1, "When using process substitution (<(...)), specify an output destination with -o or -c. \n");
}
} else {
/* An increased buffer size can provide a significant performance
* boost on some platforms. Note that providing a NULL buf with a