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fixes #8421, fixes #7968, Nim compiler compiles with MSVC C89 version (#8556)

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andri lim 2018-08-07 14:07:18 +07:00 • committed by Andreas Rumpf
commit c3d5ec8ead
3 changed files with 79 additions and 24 deletions
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21
compiler/rodutils.nim
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@ -10,6 +10,27 @@
## Serialization utilities for the compiler.
import strutils, math
# MSVC prior to 2013 doesn't have C99 functions
when defined(windows) and (defined(vcc) or defined(bcc)):
{.emit: """#if defined(_MSC_VER) && _MSC_VER < 1900
#include <stdarg.h>
static int c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap) {
int count = -1;
if (size != 0) count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
if (count == -1) count = _vscprintf(format, ap);
return count;
}
int snprintf(char *outBuf, size_t size, const char *format, ...) {
int count;
va_list ap;
va_start(ap, format);
count = c99_vsnprintf(outBuf, size, format, ap);
va_end(ap);
return count;
}
#endif
""".}
proc c_snprintf(s: cstring; n:uint; frmt: cstring): cint {.importc: "snprintf", header: "<stdio.h>", nodecl, varargs.}
proc toStrMaxPrecision*(f: BiggestFloat, literalPostfix = ""): string =