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Fix problem with flex scanners and huge token sizes 

llvm-svn: 5410
This commit is contained in:
Chris Lattner 2003-01-23 16:33:10 +00:00
parent 0eb5ce94dd
commit 9e46166980
2 changed files with 20 additions and 2 deletions
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11
llvm/Makefile.common
View File

@ -467,8 +467,17 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output)
# Create a .cpp source file from a flex input file... this uses sed to cut down
# on the warnings emited by GCC...
#
# The last line is a gross hack to work around flex aparently not being able to
# resize the buffer on a large token input. Currently, for uninitialized string
# buffers in LLVM we can generate very long tokens, so this is a hack around it.
# FIXME. (f.e. char Buffer[10000]; )
#
%.cpp: %.l
flex -t $< | sed '/^find_rule/d' | sed 's/void yyunput/inline void yyunput/' | sed 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' > $@
flex -t $< | sed '/^find_rule/d' | \
sed 's/void yyunput/inline void yyunput/' | \
sed 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \
sed 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' > $@
# Rule for building the bison parsers...

11
llvm/Makefile.rules
View File

@ -467,8 +467,17 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output)
# Create a .cpp source file from a flex input file... this uses sed to cut down
# on the warnings emited by GCC...
#
# The last line is a gross hack to work around flex aparently not being able to
# resize the buffer on a large token input. Currently, for uninitialized string
# buffers in LLVM we can generate very long tokens, so this is a hack around it.
# FIXME. (f.e. char Buffer[10000]; )
#
%.cpp: %.l
flex -t $< | sed '/^find_rule/d' | sed 's/void yyunput/inline void yyunput/' | sed 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' > $@
flex -t $< | sed '/^find_rule/d' | \
sed 's/void yyunput/inline void yyunput/' | \
sed 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \
sed 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' > $@
# Rule for building the bison parsers...